github: avoid bash escaping

so as to allow ' in github discussion and get CI green

.github/workflows/builds.yml

@@ -39,7 +39,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Dumping github context for debugging
-        run: echo '${{ toJSON(github) }}'
+        run: echo $JSON
+        env:
+          JSON: ${{ toJSON(github) }}
       - run: sudo apt update && sudo apt -y install jq curl
       - name: Parse repo and branch information
         env: