feat(workflows): allow update-awf-version to close superseded PRs (#590)

Adds close-pull-request safe-output with required-title-prefix matching the title-prefix on create-pull-request so the agent can only close PRs it is allowed to open.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: jamesadevine

.github/aw/actions-lock.json

@@ -45,10 +45,10 @@
       "version": "v7.0.1",
       "sha": "043fb46d1a93c77aae656e7c1c64a875d1fc6a0a"
     },
-    "github/gh-aw-actions/setup@v0.71.5": {
+    "github/gh-aw-actions/setup@v0.72.1": {
       "repo": "github/gh-aw-actions/setup",
-      "version": "v0.71.5",
-      "sha": "b8068426813005612b960b5ab0b8bd2c27142323"
+      "version": "v0.72.1",
+      "sha": "bc56a0cad2f450c562810785ef38649c04db812a"
     },
     "github/gh-aw/actions/setup@v0.68.1": {
       "repo": "github/gh-aw/actions/setup",