Bump buildpacks/github-actions in the github-actions group (#575)

Bumps the github-actions group with 1 update: [buildpacks/github-actions](https://github.com/buildpacks/github-actions).


Updates `buildpacks/github-actions` from 5.12.1 to 5.12.3
- [Release notes](https://github.com/buildpacks/github-actions/releases)
- [Commits](buildpacks/github-actions@3fc0544...812ff66)

---
updated-dependencies:
- dependency-name: buildpacks/github-actions
  dependency-version: 5.12.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -70,7 +70,7 @@ jobs:
       - name: Rust Cache
         uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1
       - name: Install Pack CLI
-        uses: buildpacks/github-actions/setup-pack@3fc05449a74f1a007f75e87d46afea4fb471127f # v5.12.1
+        uses: buildpacks/github-actions/setup-pack@812ff667850b930be2217c48e1f980e71bd3e14f # v5.12.3
       - name: Pull builder image
         run: docker pull '${{ env.INTEGRATION_TEST_BUILDER }}'
       - name: Pull run image