build(deps): Bump actions/cache from 5 to 6

[dependabot]

Bumps actions/cache from 5 to 6.

Release notes

Sourced from actions/cache's releases.

v6.0.0

What's Changed

• Update packages, migrate to ESM by @​Samirat in actions/cache#1760

Full Changelog: actions/cache@v5...v6.0.0

v5.0.5

What's Changed

• Update ts-http-runtime dependency by @​yacaovsnc in actions/cache#1747

Full Changelog: actions/cache@v5...v5.0.5

v5.0.4

What's Changed

• Add release instructions and update maintainer docs by @​Link- in actions/cache#1696
• Potential fix for code scanning alert no. 52: Workflow does not contain permissions by @​Link- in actions/cache#1697
• Fix workflow permissions and cleanup workflow names / formatting by @​Link- in actions/cache#1699
• docs: Update examples to use the latest version by @​XZTDean in actions/cache#1690
• Fix proxy integration tests by @​Link- in actions/cache#1701
• Fix cache key in examples.md for bun.lock by @​RyPeck in actions/cache#1722
• Update dependencies & patch security vulnerabilities by @​Link- in actions/cache#1738

New Contributors

• @​XZTDean made their first contribution in actions/cache#1690
• @​RyPeck made their first contribution in actions/cache#1722

Full Changelog: actions/cache@v5...v5.0.4

v5.0.3

What's Changed

• Bump @actions/cache to v5.0.5 (Resolves: https://github.com/actions/cache/security/dependabot/33)
• Bump @actions/core to v2.0.3

Full Changelog: actions/cache@v5...v5.0.3

v.5.0.2

v5.0.2

What's Changed

When creating cache entries, 429s returned from the cache service will not be retried.

v5.0.1

[!IMPORTANT] actions/cache@v5 runs on the Node.js 24 runtime and requires a minimum Actions Runner version of 2.327.1.

... (truncated)

Changelog

Sourced from actions/cache's changelog.

Releases

How to prepare a release

[!NOTE] Relevant for maintainers with write access only.

1. Switch to a new branch from main.
2. Run npm test to ensure all tests are passing.
3. Update the version in https://github.com/actions/cache/blob/main/package.json.
4. Run npm run build to update the compiled files.
5. Update this https://github.com/actions/cache/blob/main/RELEASES.md with the new version and changes in the ## Changelog section.
6. Run licensed cache to update the license report.
7. Run licensed status and resolve any warnings by updating the https://github.com/actions/cache/blob/main/.licensed.yml file with the exceptions.
8. Commit your changes and push your branch upstream.
9. Open a pull request against main and get it reviewed and merged.
10. Draft a new release https://github.com/actions/cache/releases use the same version number used in package.json
    1. Create a new tag with the version number.
    2. Auto generate release notes and update them to match the changes you made in RELEASES.md.
    3. Toggle the set as the latest release option.
    4. Publish the release.
11. Navigate to https://github.com/actions/cache/actions/workflows/release-new-action-version.yml
    1. There should be a workflow run queued with the same version number.
    2. Approve the run to publish the new version and update the major tags for this action.

Changelog

6.1.0

• Bump @actions/cache to v6.1.0 to pick up actions/toolkit#2435 Handle cache write error due to read-only token
• Switch redundant "Cache save failed" warning to debug log in save-only

6.0.0

• Updated @actions/cache to ^6.0.1, @actions/core to ^3.0.1, @actions/exec to ^3.0.0, @actions/io to ^3.0.2
• Migrated to ESM module system
• Upgraded Jest to v30 and test infrastructure to be ESM compatible

5.0.4

• Bump minimatch to v3.1.5 (fixes ReDoS via globstar patterns)
• Bump undici to v6.24.1 (WebSocket decompression bomb protection, header validation fixes)
• Bump fast-xml-parser to v5.5.6

5.0.3

• Bump @actions/cache to v5.0.5 (Resolves: https://github.com/actions/cache/security/dependabot/33)
• Bump @actions/core to v2.0.3

5.0.2

... (truncated)

Commits

• 2c8a9bd Merge pull request #1760 from actions/samirat/esm_migration_and_package_update
• e9b91fd Prettier fixes
• e4884b8 Rebuild dist
• 10baf01 Fixed licenses
• e39b386 Fix test mock return order
• b692820 PR feedback
• 6074912 Rebuild dist bundles as ESM to match type:module
• 5a912e8 Fix lint and jest issues
• b9bf592 Update documentation for v6 release
• 80f7777 Update packages, migrate to ESM
• See full diff in compare view

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[pheidon]

APPROVE: This is a clean Dependabot bump from actions/cache v5 to v6 in the CI workflow. I verified the live head SHA (16e1d46), confirmed the only changed file is .github/workflows/ci.yml, and found no existing athena/pheidon review comments to avoid duplicating. No blockers found in the diff.

[athena-omt]

Athena review: approved current head 16e1d46360a2f0e4d85922703ae259d319e7a9df.

I verified this is a single-file Dependabot workflow bump from actions/cache@v5 to actions/cache@v6 in .github/workflows/ci.yml, found no existing Athena/Pheidon findings to duplicate, and found no diff-level blockers for approval. CI failures remain separate merge-readiness signals rather than requested code changes from this review pass.

Superseded by intended athena-omt approval; initial Pheidon approval was posted by gateway identity drift during Athena dispatch.

[athena-omt]

APPROVE

I rechecked the actual PR head at 95f1d7b in the requested worktree and found no substantive blocker in this bump. The functional change is limited to upgrading actions/cache to v6 in .github/workflows/ci.yml, and the test adjustment in test/workflow.test.ts now matches the repo’s existing ./actions/setup-shell-safe-node wrapper usage.

I also checked the broader branch diff against main to make sure there wasn’t an unrelated regression hiding behind the Dependabot commit. The rest of the branch changes appear to be prior CI/test hardening work, not a problem introduced by this dependency bump.

I could not run the local Vitest target because pnpm is not installed in this environment, so there’s a small residual verification gap, but nothing in the diff suggests a merge blocker.

Summary: clean Dependabot upgrade; no review findings.