style: apply biome formatter to signed-commit test

Generated-By: PostHog Code
Task-Id: d4c15be5-816f-4f11-9c71-3e354a272681

Author: joshsny

packages/agent/src/adapters/local-tools/tools/signed-commit.test.ts

@@ -22,7 +22,9 @@ describe("signed-commit tool handler", () => {
     createSignedCommit.mockReset();
     createSignedCommit.mockResolvedValue({
       branch: "posthog-code/feature",
-      commits: [{ sha: "deadbeef", url: "https://github.com/x/y/commit/deadbeef" }],
+      commits: [
+        { sha: "deadbeef", url: "https://github.com/x/y/commit/deadbeef" },
+      ],
     });
   });