fix(cli): ensure process exits in notifyUpdate catch blocks

Add process.exit(exitCode) in catch blocks to prevent process from hanging
when errors occur during update notification check. This ensures the process
always terminates with the appropriate exit code in all code paths.

Author: pyrytakala

packages/create-turbo/src/utils/notifyUpdate.ts

@@ -19,6 +19,6 @@ export async function notifyUpdate(exitCode: number = 0): Promise<void> {
     }
     process.exit(exitCode);
   } catch (_) {
-    // ignore error
+    process.exit(exitCode);
   }
 }

packages/turbo-codemod/src/utils/notifyUpdate.ts

@@ -34,6 +34,6 @@ export async function notifyUpdate(exitCode: number = 0): Promise<void> {
     }
     process.exit(exitCode);
   } catch (_) {
-    // ignore error
+    process.exit(exitCode);
   }
 }

packages/turbo-gen/src/utils/notifyUpdate.ts

@@ -21,6 +21,6 @@ export async function notifyUpdate(exitCode: number = 0): Promise<void> {
     }
     process.exit(exitCode);
   } catch (_) {
-    // ignore error
+    process.exit(exitCode);
   }
 }