Escape json blob in context job (#22381)

* Escape json blob in context job

* TMP: escape context blob in release.yml

.github/workflows/ci.yml

@@ -55,7 +55,7 @@ jobs:
       - name: Log context
         shell: bash
         run: |
-          cat <<EOF
+          cat <<'EOF'
           ${{ toJSON(github) }}
           EOF
       - name: Set context

.github/workflows/release.yml

@@ -24,7 +24,7 @@ jobs:
       - id: context
         shell: bash
         run: |
-          cat <<EOF
+          cat <<'EOF'
           ${{toJson(github)}}
           EOF