[ci] Allow rerunning gh actions with debug logging.

In this case we open an ssh session for 30 mins.

.github/workflows/ci.yml

@@ -786,11 +786,12 @@ jobs:
       run: |
         export
         echo $GITHUB_ENV
+
     - name: Setup tmate session
-      if: ${{ failure() }}
+      if: ${{ failure() && runner.debug }}
       uses: mxschmitt/action-tmate@v3
       # When debugging increase to a suitable value!
-      timeout-minutes: ${{ github.event.pull_request && 1 || 20 }}
+      timeout-minutes: 30
 
     - name: Prepare code coverage report
       if: ${{ success() && (matrix.coverage == true) }}