[gh-actions](deps): Bump docker/build-push-action from 6.4.0 to 6.10.0 #603

Job	Run time
build (./images/gh-gl-sync, ghcr.io/spack/ci-bridge:0.0.43)	1m 19s
build (./images/ci-key-clear, ghcr.io/spack/ci-key-clear:0.0.2)	1m 13s
build (./images/gitlab-stuckpods, ghcr.io/spack/stuckpods:0.0.1)	3m 5s
build (./images/gitlab-clear-pipelines, ghcr.io/spack/gitlab-clear-pipelines:0.0.1)	51s
build (./images/gitlab-delete-stale-branches, ghcr.io/spack/gitlab-delete-stale-branches:0.0.1)	52s
build (./images/gitlab-skipped-pipelines, ghcr.io/spack/gitlab-skipped-pipelines:0.0.2)	53s
build (./images/notary, ghcr.io/spack/notary:latest)	2m 11s
build (./images/python-aws-bash, ghcr.io/spack/python-aws-bash:0.0.2)	1m 38s
build (./images/snapshot-release-tags, ghcr.io/spack/snapshot-release-tags:0.0.4)	1m 1s
build (./images/cache-indexer, ghcr.io/spack/cache-indexer:0.0.3)	1m 22s
build (./analytics, ghcr.io/spack/django:0.4.0)	4m 29s
build (./images/ci-prune-buildcache, ghcr.io/spack/ci-prune-buildcache:0.0.4)	15m 5s
build (./images/protected-publish, ghcr.io/spack/protected-publish:0.0.1)	2m 14s
	36m 13s

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