ci: disable SonarCloud automatic triggers

SONAR_TOKEN is currently not validly configured for this repository, so the scheduled
push and pull_request runs of the SonarCloud workflow fail on every
commit. Comment out those triggers and keep only workflow_dispatch so
the job can still be invoked manually. Restore the original triggers
once the token is set up.

Author: stefanhahmann

.github/workflows/sonarcloud.yml

@@ -24,10 +24,12 @@
 name: SonarCloud analysis
 
 on:
-  push:
-    branches: [ "master" ]
-  pull_request:
-    branches: [ "master" ]
+  # Automatic triggers disabled: SONAR_TOKEN is currently validly not configured for this repo.
+  # Re-enable the push/pull_request triggers below once the token is available.
+  # push:
+  #   branches: [ "master" ]
+  # pull_request:
+  #   branches: [ "master" ]
   workflow_dispatch:
 
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