update vale permissions (#65)

Author: jeff-allen-mongo

.github/workflows/vale-tdbx.yml

@@ -8,6 +8,9 @@ jobs:
   vale:
     name: TDBX Vale rules
     runs-on: ubuntu-latest
+      permissions:
+        contents: read
+        pull-requests: write
     steps:
       - name: checkout
         uses: actions/checkout@master
@@ -37,4 +40,3 @@ jobs:
           files: ${{steps.files.outputs.added_modified}}
           fail_on_error: true
           token: ${{secrets.GITHUB_TOKEN}}
-