Potential fix for code scanning alert no. 2: Workflow does not contain permissions (#80)

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: MayuriXx

.github/workflows/sonar.yaml

@@ -6,6 +6,8 @@ on:
     types: [opened, synchronize, reopened]
 
 name: Sonar
+permissions:
+  contents: read
 jobs:
   sonarqube:
     runs-on: ubuntu-latest