fix: add necessary permissions

Author: sebastienfi

.github/workflows/structurizr-diagrams-comment.yml

@@ -11,6 +11,9 @@ jobs:
     comment-on-pr:
         if: github.event.workflow_run.conclusion == 'success'
         runs-on: ubuntu-latest
+        permissions:
+            contents: read # Allow to work with the contents of the repository, including git pull.
+            pull-requests: write # Allow to list and create pr's comments.
         steps:
         - uses: sebastienfi/structurizr-pr-comment@v1
           with:

.github/workflows/structurizr-diagrams-update.yml

@@ -13,6 +13,8 @@ jobs:
     update-diagrams:
         runs-on: ubuntu-latest
         container: ghcr.io/sebastienfi/structurizr-cli-with-bonus:latest
+        permissions: 
+          contents: write # Allow to work with the contents of the repository, including git push.
         steps:
         - uses: sebastienfi/structurizr-gen-images@v1
           with: