[cherry-pick] chore(deps): bump sigstore/cosign-installer from 3.7.0 to 3.8.0 in the actions group (#7294)

chore(deps): bump sigstore/cosign-installer from 3.7.0 to 3.8.0 in the actions group (#7291)

chore(deps): bump sigstore/cosign-installer in the actions group

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


Updates `sigstore/cosign-installer` from 3.7.0 to 3.8.0
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@dc72c7d...c56c2d3)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
...

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

Author: nginx-bot

.github/workflows/release.yml

@@ -445,7 +445,7 @@ jobs:
         if: ${{ needs.variables.outputs.binary_cache_sign_hit != 'true' }}
 
       - name: Install Cosign
-        uses: sigstore/cosign-installer@dc72c7d5c4d10cd6bcb8cf6e3fd625a9e5e537da # v3.7.0
+        uses: sigstore/cosign-installer@c56c2d3e59e4281cc41dea2217323ba5694b171e # v3.8.0
         if: ${{ needs.variables.outputs.binary_cache_sign_hit != 'true' }}
 
       - name: Create Tarballs