NUTCH-3085 Augment CI by adding code coverage and code quality reporting (#900)

Author: lewismc

.github/workflows/sonarcloud.yml

@@ -64,6 +64,10 @@ jobs:
       - name: Resolve PR number
         id: pr
         run: |
+          if [ "${{ github.event.workflow_run.event }}" != "pull_request" ]; then
+            echo "is_pr=false" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
           PR_NUMBER=$(gh api \
             "repos/${{ github.repository }}/commits/${{ github.event.workflow_run.head_sha }}/pulls" \
             --jq '.[0].number // empty')
@@ -82,7 +86,7 @@ jobs:
           args: >
             -Dsonar.pullrequest.key=${{ steps.pr.outputs.number }}
             -Dsonar.pullrequest.branch=${{ github.event.workflow_run.head_branch }}
-            -Dsonar.pullrequest.base=${{ github.event.workflow_run.event == 'pull_request' && 'master' || 'master' }}
+            -Dsonar.pullrequest.base=master
         env:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
           SONAR_HOST_URL: https://sonarcloud.io