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/aw/actions-lock.json

@@ -0,0 +1,19 @@
+{
+  "entries": {
+    "actions/github-script@v9.0.0": {
+      "repo": "actions/github-script",
+      "version": "v9.0.0",
+      "sha": "3a2844b7e9c422d3c10d287c895573f7108da1b3"
+    },
+    "github/gh-aw-actions/setup@v0.71.5": {
+      "repo": "github/gh-aw-actions/setup",
+      "version": "v0.71.5",
+      "sha": "b8068426813005612b960b5ab0b8bd2c27142323"
+    },
+    "github/gh-aw/actions/setup@v0.71.5": {
+      "repo": "github/gh-aw/actions/setup",
+      "version": "v0.71.5",
+      "sha": "19ac811a4a85389c33b15128e1d7b7d4507f814a"
+    }
+  }
+}