fix dependabot perms (#1792)

add dependabot to playwright

Signed-off-by: Jess Frazelle <github@jessfraz.com>

.github/workflows/playwright.yml

@@ -9,6 +9,10 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
   playwright-ubuntu:
     timeout-minutes: 60