[tests] Pin Next.js version in test fixtures (#9910)

Co-authored-by: Sean Massa <EndangeredMassa@gmail.com>

test/lib/deployment/test-deployment.js

@@ -2,7 +2,7 @@ const assert = require('assert');
 const bufferReplace = require('buffer-replace');
 const fs = require('fs');
 const json5 = require('json5');
-const glob = require('util').promisify(require('glob'));
+const { glob } = require('glob');
 const path = require('path');
 const { spawn } = require('child_process');
 const fetch = require('./fetch-retry.js');