chore(deps): update docker/build-push-action action to v6.15.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
docker/build-push-action	action	minor	v6.13.0 -> v6.15.0

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Release Notes

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

v6.15.0

Compare Source

v6.14.0

Compare Source

• Bump @​docker/actions-toolkit from 0.53.0 to 0.55.0 in https://github.com/docker/build-push-action/pull/1324

Full Changelog: docker/build-push-action@v6.13.0...v6.14.0

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Configuration

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

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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• If you want to rebase/retry this PR, check this box

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[TommyE123]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ACTION	actionlint	1		0	0.01s
✅ EDITORCONFIG	editorconfig-checker	1		0	0.01s
✅ REPOSITORY	checkov	yes		no	10.04s
✅ REPOSITORY	dustilock	yes		no	0.2s
✅ REPOSITORY	gitleaks	yes		no	0.52s
✅ REPOSITORY	git_diff	yes		no	0.01s
✅ REPOSITORY	grype	yes		no	10.15s
✅ REPOSITORY	secretlint	yes		no	0.55s
✅ REPOSITORY	syft	yes		no	1.16s
✅ REPOSITORY	trivy	yes		no	6.09s
✅ REPOSITORY	trivy-sbom	yes		no	0.06s
✅ REPOSITORY	trufflehog	yes		no	1.51s
✅ YAML	prettier	1	0	0	0.41s
✅ YAML	v8r	1		0	2.69s
✅ YAML	yamllint	1		0	0.23s

See detailed report in MegaLinter reports
Set VALIDATE_ALL_CODEBASE: true in mega-linter.yml to validate all sources, not only the diff