fix workflow concurrency

.github/workflows/build-conformance-table.yaml

@@ -39,9 +39,15 @@ on:
         required: false
 permissions:
   contents: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
 jobs:
   update-conformance-table:
-    concurrency: conformance-table-build # always run one instance of this workflow, to avoid conflicts in the conformance json generation
     runs-on: ubuntu-latest
     steps:
       - name: Prepare Release Mode Inputs