switch tokens around to hopefully fix auto-merging (#44147)

.github/workflows/enterprise-dates.yml

@@ -56,7 +56,7 @@ jobs:
           HUSKY: '0'
         with:
           # need to use a token with repo and workflow scopes for this step
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ secrets.DOCS_BOT_PAT_READPUBLICKEY }}
           commit-message: '🤖 ran src/ghes-releases/scripts/update-enterprise-dates.js'
           title: 🤖 src/ghes-releases/lib/enterprise-dates.json update
           body:
@@ -84,7 +84,7 @@ jobs:
         name: Approve
         uses: juliangruber/approve-pull-request-action@dcc4effb325c0b503408619918d56e40653dcc91
         with:
-          github-token: ${{ secrets.DOCS_BOT_PAT_READPUBLICKEY }}
+          github-token: ${{ secrets.GITHUB_TOKEN }}
           number: ${{ steps.create-pull-request.outputs.pull-request-number }}
 
       - name: Send Slack notification if workflow fails