chore(deps): update sigstore/cosign-installer action to v3.8.0

Author: renovate[bot]

.github/workflows/reusable-build.yml

@@ -311,7 +311,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.7.0
+      - uses: sigstore/cosign-installer@v3.8.0
         if: github.event_name != 'pull_request'
 
       - name: Sign container image
@@ -581,7 +581,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
 
       # Sign container
-      - uses: sigstore/cosign-installer@v3.7.0
+      - uses: sigstore/cosign-installer@v3.8.0
         if: github.event_name != 'pull_request'
 
       - name: Sign container image