message: techdocs-node: tweak mock-fs setup
diff: @@ -219,13 +219,13 @@ describe('GoogleGCSPublish', () => {
  },
  };
  - beforeAll(() => {
  + beforeEach(() => {
  mockFs({
  [directory]: files,
  });
  });
  - afterAll(() => {
  + afterEach(() => {
  mockFs.restore();
  });
  