(Hopefully) allow Qodana to be run on PRs coming from forks

Changed the workflow that invokes Qodana to always run the GHA workflow that is part of the target branch (using the pull_request_target)

.github/workflows/code_quality.yml

@@ -1,7 +1,8 @@
 name: Qodana
 
 on:
-  pull_request:
+  workflow_dispatch:
+  pull_request_target:
   push:
     branches:
       - master
@@ -14,9 +15,10 @@ jobs:
     steps:
       - uses: actions/checkout@v3
         with:
+          ref: ${{ github.event.pull_request.head.sha }}  # to check out the actual pull request commit, not the merge commit
           fetch-depth: 0
       - name: 'Qodana Scan'
-        uses: JetBrains/qodana-action@main
+        uses: JetBrains/qodana-action@v2023.2
         with:
           upload-result: ${{ github.ref_name == 'master' || github.ref_name == 'develop' }}
           args: --baseline,qodana.sarif.json