fix: use local path for container-image reusable workflow reference

Use ./.github/workflows/container-image.yml instead of the full
repo@main reference so the workflow always uses the version from
the same commit.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: christiangda

.github/workflows/release.yml

@@ -74,7 +74,7 @@ jobs:
   container_image:
     name: Publish Container Images
     needs: build
-    uses: slashdevops/idp-scim-sync/.github/workflows/container-image.yml@main
+    uses: ./.github/workflows/container-image.yml
 
   create-github-release:
     name: Create Github Release