Update GitHub Actions workflows. (#851)

This PR was triggered by @t0yv0 generated by the
update-workflows-ecosystem-providers workflow in the pulumi/ci-mgmt
repo, from commit
[daf8aba035d6ed8919db6089c780f56cb7fefc69](daf8aba035).

Co-authored-by: Pulumi Bot <bot@pulumi.com>

.github/workflows/gh-aw-pr-review.md

@@ -0,0 +1,25 @@
+---
+on:
+  pull_request:
+    types:
+    - opened
+    - ready_for_review
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: Pull request number to review
+        required: true
+        type: string
+permissions:
+  contents: read
+  id-token: write
+  pull-requests: read
+imports:
+- shared/review.md
+- shared/plugins/code-review/code-review.md
+description: Automated PR review for trusted internal contributors.
+source: pulumi-labs/gh-aw-internal/.github/workflows/gh-aw-pr-review.md@8a92f53fac170563f7727cacab2dbedb5d5b9e29
+strict: true
+timeout-minutes: 15
+---
+# Internal Trusted PR Reviewer