fix permissions for browsertesting open issue workflow (#62874)

Author: DeagleGross

.github/workflows/browsertesting-open-issue.yml

@@ -9,6 +9,9 @@ on:
 jobs:
   create-issue:
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      issues: write
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4