Update hermesTag fixture to current version format (#56751)

Summary:
Pull Request resolved: #56751

The hermes-utils test used an old-style Hermes git tag
('hermes-2022-04-28-RNv0.69.0-...') as its fixture. Hermes now uses semver
version strings (e.g. '250829098.0.13'). Update the fixture to match the
current format so the test better represents real usage.

## Changelog:
[Internal] -

Reviewed By: cortinico

Differential Revision: D104649627

fbshipit-source-id: 00562fd7d0325acde6f4ccf906e4c34e3c705375

Author: cipolleschi

packages/react-native/scripts/hermes/__tests__/hermes-utils-test.js

@@ -14,8 +14,7 @@ const {readHermesTag, setHermesTag} = require('../hermes-utils');
 // $FlowFixMe[untyped-import] (OSS) memfs
 const {memfs} = require('memfs');
 
-const hermesTag =
-  'hermes-2022-04-28-RNv0.69.0-15d07c2edd29a4ea0b8f15ab0588a0c1adb1200f';
+const hermesTag = '250829098.0.13';
 const ROOT_DIR = path.normalize(path.join(__dirname, '../../..'));
 const SDKS_DIR = path.join(ROOT_DIR, 'sdks');