Clean up processes in integration tests (#15102)

integration-tests/telemetry.test.ts

@@ -4,12 +4,19 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import { describe, it, expect } from 'vitest';
+import { describe, it, expect, beforeEach, afterEach } from 'vitest';
 import { TestRig } from './test-helper.js';
 
 describe('telemetry', () => {
+  let rig: TestRig;
+
+  beforeEach(() => {
+    rig = new TestRig();
+  });
+
+  afterEach(async () => await rig.cleanup());
+
   it('should emit a metric and a log event', async () => {
-    const rig = new TestRig();
     rig.setup('should emit a metric and a log event');
 
     // Run a simple command that should trigger telemetry