Bump buildpacks/github-actions from 5.8.7 to 5.8.8 (#324)

Bumps [buildpacks/github-actions](https://github.com/buildpacks/github-actions) from 5.8.7 to 5.8.8.
- [Release notes](https://github.com/buildpacks/github-actions/releases)
- [Commits](buildpacks/github-actions@v5.8.7...v5.8.8)

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

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

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
       - name: Rust Cache
         uses: Swatinem/rust-cache@v2.7.7
       - name: Install Pack CLI
-        uses: buildpacks/github-actions/setup-pack@v5.8.7
+        uses: buildpacks/github-actions/setup-pack@v5.8.8
       - name: Pull builder image
         run: docker pull '${{ env.INTEGRATION_TEST_BUILDER }}'
       - name: Pull run image