update parity workflow to use stagehand-parity-bot app

Author: the-roaring

.github/workflows/feature-parity.yml

@@ -12,6 +12,10 @@ jobs:
   check-parity-label:
     runs-on: ubuntu-latest
     if: github.event.action == 'labeled' && github.event.label.name == 'parity'
+    permissions:
+      contents: read
+      pull-requests: write
+      issues: write
     steps:
       - name: Check out repository code
         uses: actions/checkout@v4
@@ -51,10 +55,19 @@ jobs:
 
             console.log(`User ${context.actor} has ${permission.permission} access - proceeding with parity workflow`);
 
-      - name: Create issue in TS SDK repository
+      - name: Generate GitHub App token
+        id: generate-token
+        uses: actions/create-github-app-token@v1
+        with:
+          app-id: ${{ secrets.PARITY_APP_ID }}
+          private-key: ${{ secrets.PARITY_APP_PRIVATE_KEY }}
+          owner: browserbase
+          repositories: stagehand
+
+      - name: Create issue in Python SDK repository
         uses: actions/github-script@v7
         with:
-          github-token: ${{ secrets.TS_REPO_TOKEN }}
+          github-token: ${{ steps.generate-token.outputs.token }}
           script: |
             const { data: pullRequest } = await github.rest.pulls.get({
               owner: context.repo.owner,