Add write permission for pull-requests

Author: AlvaroRausell

.github/workflows/lint.yml

@@ -4,6 +4,9 @@ on:
     paths:
       - _data/collection-index.yml
 
+permissions:
+  contents: read
+  pull-requests: write
 
 jobs:
   yamllint:
@@ -19,4 +22,4 @@ jobs:
           yamllint_strict: true
           yamllint_comment: true
         env:
-          GITHUB_ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}