Add GitHub Actions workflow for auto-tagging and notifications

[sachintu47]

Auto-tag on every release and notify downstream zoslibport on updates

[sachintu47]

augment review

[augmentcode]

🤖 Augment PR Summary

Summary: Adds a GitHub Actions workflow to automate version tagging/releases and notify a downstream repo.

Changes:

• Introduces .github/workflows/auto-tag-notify.yml triggered on merged PRs into zopen2 (pull_request_target) and on published releases
• Checks out the merge commit (PR path) or the release tag (release path)
• On PR merges, bumps the tag and creates a GitHub Release with autogenerated notes
• Dispatches a repository_dispatch event to zopencommunity/zoslibport to notify downstream of updates

Technical Notes: Actions are pinned to immutable SHAs and the workflow requests contents: write to allow tag/release creation.

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[augmentcode]

Review completed. 3 suggestions posted.

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[sachintu47]

augment review

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Review completed. 1 suggestion posted.

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[sachintu47]

augment review

[augmentcode]

Review completed. 2 suggestions posted.

Comment augment review to trigger a new review at any time.

[augmentcode]

Review completed. 1 suggestion posted.

Comment augment review to trigger a new review at any time.

[augmentcode]

Because this workflow also triggers on release: published, a merge run that creates a release will cause a second run and likely dispatch upstream-release twice. Please confirm the downstream can handle duplicate notifications (or has a dedupe mechanism) so this doesn’t trigger redundant downstream work.

Severity: medium

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