test: making test-runner-run.mjs ignore colors

Fixes: #54551

Author: puskin

test/parallel/test-runner-run.mjs

@@ -7,6 +7,8 @@ import assert from 'node:assert';
 
 const testFixtures = fixtures.path('test-runner');
 
+process.env.NODE_DISABLE_COLORS = '1';
+
 describe('require(\'node:test\').run', { concurrency: true }, () => {
   it('should run with no tests', async () => {
     const stream = run({ files: [] });