ci: scope down GitHub Token permissions (#524)

* ci: scope down permissions for notification.yml

* ci: scope down permissions for sonarcloud.yml

* ci: scope down permissions for doxygen.yml

Author: AdnaneKhan

.github/workflows/doxygen.yml

@@ -7,6 +7,9 @@ on:
     branches: ['main']
     types: [opened, closed]
 
+permissions:
+  contents: write
+
 jobs:
   update-doxygen:
     runs-on: ubuntu-latest

.github/workflows/notification.yml

@@ -9,6 +9,9 @@ env:
   ISSUE_TITLE: ${{ github.event.issue.title }}
 
 
+permissions:
+  contents: read
+
 jobs:
   issue-notification:
     runs-on: ubuntu-latest

.github/workflows/sonarcloud.yml

@@ -7,6 +7,9 @@ on:
     branches:
       - '*'
 
+permissions:
+  contents: read
+
 jobs:
   sonarcloud:
     runs-on: ubuntu-latest