Recompile agentic workflow lock file from updated .md source

modified: .github/aw/actions-lock.json
- Adds new pinned entry for `actions/github-script@v9` (sha `373c709c...`)
- Updates `github/gh-aw-actions/setup` pin from `v0.63.1` to `v0.68.3` with new sha

modified: .github/workflows/weekly-reference-impl-sync.lock.yml
- Regenerated by `gh aw compile` (v0.68.3) from the `.md` source that was hand-edited in PR #77 without recompiling
- Compiler upgraded from v0.51.6 to v0.68.3; schema version v1 to v3
- Frontmatter hash updated to reflect current `.md` content
- `create_issue` assignee now correctly reflects `copilot-swe-agent` (was `copilot`)
- `assign_to_agent` now includes `model: claude-opus-4.6`
- Safe-outputs config updated with new tool entries (`create_report_incomplete_issue`, `report_incomplete`, `noop`)
- Action pin references updated to match newer gh-aw-actions versions

Signed-off-by: Ed Burns <edburns@microsoft.com>

Author: edburns

.github/aw/actions-lock.json

@@ -5,6 +5,11 @@
       "version": "v8",
       "sha": "ed597411d8f924073f98dfc5c65a23a2325f34cd"
     },
+    "actions/github-script@v9": {
+      "repo": "actions/github-script",
+      "version": "v9",
+      "sha": "373c709c69115d41ff229c7e5df9f8788daa9553"
+    },
     "actions/setup-java@v4": {
       "repo": "actions/setup-java",
       "version": "v4",
@@ -15,10 +20,10 @@
       "version": "v4",
       "sha": "49933ea5288caeca8642d1e84afbd3f7d6820020"
     },
-    "github/gh-aw-actions/setup@v0.63.1": {
+    "github/gh-aw-actions/setup@v0.68.3": {
       "repo": "github/gh-aw-actions/setup",
-      "version": "v0.63.1",
-      "sha": "53e09ec0be6271e81a69f51ef93f37212c8834b0"
+      "version": "v0.68.3",
+      "sha": "ba90f2186d7ad780ec640f364005fa24e797b360"
     },
     "github/gh-aw/actions/setup@v0.51.6": {
       "repo": "github/gh-aw/actions/setup",