Take latest release without suffix after ie v0.19.1 but not v0.19.1-test

Author: MattBabbage

.github/workflows/registry-releaser.yml

@@ -34,7 +34,7 @@ jobs:
           if [[ "${{ github.ref_type }}" == "tag" ]]; then
             TAG="${{ github.ref_name }}"
           else
-            TAG=$(git tag --sort=-version:refname | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+' | head -n1)
+            TAG=$(git tag --sort=-version:refname | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' | head -n1)
           fi
           IMAGE="ghcr.io/github/github-mcp-server:$TAG"