Group Dependabot updates into single PRs per ecosystem

[kafkade]

Description

Dependabot currently opens a separate pull request for each updated dependency, which creates review noise and CI churn. This enables grouped updates so each ecosystem produces a single consolidated PR.

Each updates: entry in .github/dependabot.yml now has a groups: block keyed by the ecosystem name with patterns: ["*"], bundling all of that ecosystem's dependencies together:

• cargo dependencies are grouped under a cargo group.
• github-actions dependencies are grouped under a github-actions group.

All existing keys (schedule, commit-message, labels, open-pull-requests-limit) are preserved unchanged.

Related Issues

N/A

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Documentation update
• Refactoring (no functional changes)
• CI / infrastructure
• Other (describe below)

Checklist

• I have read CONTRIBUTING.md
• cargo test passes
• cargo clippy -- -D warnings reports no warnings
• cargo fmt has been applied
• I have added tests for new functionality (if applicable)
• I have updated documentation (if applicable)

Note: This change only touches .github/dependabot.yml, so the Rust build/test/lint items above are not applicable.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	kite	ecff73c	Commit Preview URL Branch Preview URL	Jun 17 2026, 07:53 PM