Update the workflow to update both root and package version

Author: mikesir87

.github/workflows/build-and-register.yaml

@@ -39,7 +39,7 @@ jobs:
       - name: Update server.json version
         run: |
           VERSION=${GITHUB_REF#refs/tags/v}
-          jq --arg version "$VERSION" '.version = $version' server.json > tmp.json
+          jq --arg version "$VERSION" '.version = $version | .packages[0].version = $version' server.json > tmp.json
           mv tmp.json server.json
 
       - name: Install MCP Publisher