feat: Update the GH actions (#98)

Author: ZPascal

.github/workflows/integrationtest.yml

@@ -12,6 +12,7 @@ jobs:
 
   grafana-api-sdk-test:
     runs-on: ubuntu-latest
+    permissions: read-all
     strategy:
       matrix:
         python-version: [ '3.10' ]

.github/workflows/pull-request-checks.yml

@@ -30,6 +30,7 @@ jobs:
 
   pr-lint:
     runs-on: ubuntu-latest
+    permissions: write-all
     strategy:
       matrix:
         python-version: [ '3.10' ]
@@ -53,6 +54,7 @@ jobs:
 
   pr-coverage:
     runs-on: ubuntu-latest
+    permissions: write-all
     strategy:
       matrix:
         python-version: [ '3.10' ]