Update GitHub Action Versions

[morisil]

GitHub Actions Version Updates

• actions/setup-java published a new release v5.6.0 on 2026-07-16T14:46:41Z
• anthropics/claude-code-action published a new release v1.0.177 on 2026-07-18T01:21:54Z

[claude]

Review

This is a routine automated dependency bump from the action-version-updater workflow, so there isn't much surface area to review. A few notes:

Correctness

• actions/setup-java v5.5.0 → v5.6.0 (minor) and anthropics/claude-code-action v1.0.175 → v1.0.177 (patch) are both non-breaking version bumps, consistent with the PR description.
• The two claude-code-action references (claude-code.yml and claude-code-review.yml) are bumped together and stay in sync, which is good — a partial update across these files would be easy to miss.

Consistency (not part of this diff, just an observation)

• .github/workflows/reference/build-release.yml still pins actions/checkout@v6.0.1 and actions/setup-java@v5.1.0, noticeably behind the versions now used elsewhere in this repo. If that file is meant to be a live reference example rather than a dead template, it might be worth bringing it into scope for action-version-updater.yml (or documenting why it's excluded) in a follow-up.

Security

• Actions are pinned to version tags (e.g. @v5.6.0) rather than full commit SHAs. Tags are mutable, so this is a minor supply-chain consideration — but it matches the pre-existing convention across the repo, so it's not something this PR introduces or need block on.

Test coverage

• N/A — no logic changes, just version strings in reusable workflow YAML.

Overall this looks safe to merge as-is.