De-duplicate sonar job in the CI (#1238)

* De-duplicate sonar job in the CI

* Remove workaround for `src/*/kotlin` folders

* Downgrade the sonarqube plugin version

* Try increasing workers for this job, since it's quite slow

* Warn about regression in latest sonarqube release

* Forbid backups to prevent cryptographic issues

.github/workflows/sonar.yml

@@ -1,4 +1,4 @@
-name: Code Quality Checks
+name: Sonar
 
 on:
   workflow_dispatch:
@@ -10,11 +10,11 @@ on:
 # Enrich gradle.properties for CI/CD
 env:
   GRADLE_OPTS: -Dorg.gradle.jvmargs="-Xmx3072m -Dfile.encoding=UTF-8 -XX:+HeapDumpOnOutOfMemoryError" -XX:MaxMetaspaceSize=512m -Dkotlin.daemon.jvm.options="-Xmx2g" -Dkotlin.incremental=false
-  CI_GRADLE_ARG_PROPERTIES: --stacktrace -PpreDexEnable=false --max-workers 2 --no-daemon --warn
+  CI_GRADLE_ARG_PROPERTIES: --stacktrace -PpreDexEnable=false --max-workers 4 --no-daemon --warn
 
 jobs:
   sonar:
-    name: Project Check Suite
+    name: Sonar Quality Checks
     runs-on: ubuntu-latest
     # Allow all jobs on main and develop. Just one per PR.
     concurrency:
@@ -41,9 +41,3 @@ jobs:
           ORG_GRADLE_PROJECT_SONAR_LOGIN: ${{ secrets.SONAR_TOKEN }}
         if: ${{ always() && env.SONAR_TOKEN != '' && env.ORG_GRADLE_PROJECT_SONAR_LOGIN != '' }}
         run: ./gradlew sonar $CI_GRADLE_ARG_PROPERTIES
-      - name: Prepare Danger
-        if: always()
-        run: |
-          npm install --save-dev @babel/core
-          npm install --save-dev @babel/plugin-transform-flow-strip-types
-          yarn add danger-plugin-lint-report --dev