Update Node.js 24 runtime status to GA

Updates the status of `nodejs24` runtime from `beta` to `GA` in `src/deploy/functions/runtimes/supported/types.ts`.
This ensures that deployments using Node.js 24 are correctly recognized as stable.

Author: google-labs-jules[bot]

src/deploy/functions/runtimes/supported/types.ts

@@ -91,7 +91,7 @@ export const RUNTIMES = runtimes({
   },
   nodejs24: {
     friendly: "Node.js 24",
-    status: "beta",
+    status: "GA",
     deprecationDate: "2028-04-30",
     decommissionDate: "2028-10-31",
   },