chore(deps): update docker/build-push-action action to v6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
docker/build-push-action	action	major	v5.4.0 -> v6.1.0

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Release Notes

docker/build-push-action (docker/build-push-action)

### [`v6.1.0`](https://togithub.com/docker/build-push-action/compare/v6.0.2...v6.1.0) [Compare Source](https://togithub.com/docker/build-push-action/compare/v6.0.2...v6.1.0) ### [`v6.0.2`](https://togithub.com/docker/build-push-action/compare/v6.0.1...v6.0.2) [Compare Source](https://togithub.com/docker/build-push-action/compare/v6.0.1...v6.0.2) ### [`v6.0.1`](https://togithub.com/docker/build-push-action/compare/v6.0.0...v6.0.1) [Compare Source](https://togithub.com/docker/build-push-action/compare/v6.0.0...v6.0.1) ### [`v6.0.0`](https://togithub.com/docker/build-push-action/compare/v5.4.0...v6.0.0) [Compare Source](https://togithub.com/docker/build-push-action/compare/v5.4.0...v6.0.0)

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Configuration

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[codecov[bot]]

Codecov Report

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

Project coverage is 74.17%. Comparing base (030edce) to head (82e3b8f).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #780 +/- ## ========================================== - Coverage 74.28% 74.17% -0.12% ========================================== Files 28 28 Lines 1816 1816 ========================================== - Hits 1349 1347 -2 - Misses 352 353 +1 - Partials 115 116 +1 ``` | [Flag](https://app.codecov.io/gh/kubewarden/kubewarden-controller/pull/780/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=kubewarden) | Coverage Δ | | |---|---|---| | [integration-tests](https://app.codecov.io/gh/kubewarden/kubewarden-controller/pull/780/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=kubewarden) | `62.05% <ø> (-0.12%)` | :arrow_down: | | [unit-tests](https://app.codecov.io/gh/kubewarden/kubewarden-controller/pull/780/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=kubewarden) | `50.19% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=kubewarden#carryforward-flags-in-the-pull-request-comment) to find out more.

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