refactor: yml to yaml

Author: vwency

.github/workflows/delete-old-image.yml .github/workflows/delete-old-image.yaml.github/workflows/delete-old-image.yml renamed to .github/workflows/delete-old-image.yaml

@@ -9,7 +9,7 @@ jobs:
 
 
   trigger-build:
-    uses: multi-repo/workflows/.github/workflows/kaniko-build.yml@main
+    uses: multi-repo/workflows/.github/workflows/kaniko-build.yaml@main
     with:
       image-name: ${{ github.repository }}/pg
     secrets:
@@ -18,7 +18,7 @@ jobs:
 
 
   trigger-cleanup:
-      uses: multi-repo/workflows/.github/workflows/clean-registry.yml@main
+      uses: multi-repo/workflows/.github/workflows/clean-registry.yaml@main
       with:
         owner: multi-repo
         repository: postgres