chore: update docker/metadata-action action to v5.6.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
docker/metadata-action	action	minor	v5.5.1 -> v5.6.0

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Release Notes

docker/metadata-action (docker/metadata-action)

### [`v5.6.0`](https://redirect.github.com/docker/metadata-action/compare/v5.5.1...v5.6.0) [Compare Source](https://redirect.github.com/docker/metadata-action/compare/v5.5.1...v5.6.0)

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

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♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 89.44%. Comparing base (66e2f30) to head (f8f8b9f). Report is 1 commits behind head on release.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release #1978 +/- ## ======================================== Coverage 89.44% 89.44% ======================================== Files 271 271 Lines 11470 11470 ======================================== Hits 10259 10259 Misses 970 970 Partials 241 241 ```

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