fix(bug-assess): recompile lock so github guard repos is 'all' (#3036)

The committed lock file declared compiler v0.79.8 but contained a github
allow-only guard policy with `"repos": "${GITHUB_REPOSITORY}"`. MCP Gateway
v0.3.25 rejects repo-specific values ("allow-only.repos string must be 'all'
or 'public'"), so the agent job failed at "Start MCP Gateway":

  failed to register guard for server "github": invalid server guard policy:
  allow-only.repos string must be 'all' or 'public'

Recompiling bug-assess.md with gh-aw v0.79.8 deterministically emits
`"repos": "all"` (the gateway-accepted default when min-integrity is set
without an explicit repos scope), confirming the committed lock was stale.
This also reconciles the manifest setup-action SHA with the value already
used in the workflow body.

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

Author: mnriem

.github/aw/actions-lock.json

@@ -4,6 +4,11 @@
       "repo": "actions/github-script",
       "version": "v9.0.0",
       "sha": "3a2844b7e9c422d3c10d287c895573f7108da1b3"
+    },
+    "github/gh-aw-actions/setup@v0.79.8": {
+      "repo": "github/gh-aw-actions/setup",
+      "version": "v0.79.8",
+      "sha": "c0338fef4749d08c21f8f975fb0e37efa17dda47"
     }
   }
 }