Fix tests in CI

Signed-off-by: Francesco Saltori <francescosaltori@gmail.com>

plugins/scaffolder-backend/src/scaffolder/actions/builtin/publish/githubPullRequest.test.ts

@@ -287,6 +287,8 @@ describe('createPublishGithubPullRequestAction', () => {
         teamReviewers: ['team-foo'],
       };
 
+      mockFs({ [workspacePath]: {} });
+
       ctx = {
         createTemporaryDirectory: jest.fn(),
         output: jest.fn(),
@@ -337,6 +339,8 @@ describe('createPublishGithubPullRequestAction', () => {
         description: 'This PR is really good',
       };
 
+      mockFs({ [workspacePath]: {} });
+
       ctx = {
         createTemporaryDirectory: jest.fn(),
         output: jest.fn(),