fix(workflow): prevent shell interpretation in JSON heredoc

- Change unquoted heredoc delimiter from `<<EOF` to `<<"EOF"` in PR parsing step
- Prevents shell from interpreting special characters (like `->`) in JSON comment bodies as shell commands
- Fixes workflow failures when PR comments contain shell metacharacters

Resolves issue where workflow would exit unexpectedly and execute unintended bash commands when processing PR comments containing characters like `->`.

Author: LucianBuzzo

.github/workflows/index.yml

@@ -99,7 +99,7 @@ jobs:
       - name: Parse pull request using jq and checking mergeable state
         id: mergeable_pr
         run: |
-          cat <<EOF > pr.js
+          cat <<"EOF" > pr.js
           ${{ steps.get_pull_request_info.outputs.data }}
           EOF
           export IS_MERGEABLE_PR=$(jq -r '.mergeable' pr.js)