Fix ESM dependency compatibility

Co-authored-by: felickz <1760475+felickz@users.noreply.github.com>

Author: Copilot

__tests__/mocks/actions-core.js

@@ -0,0 +1,6 @@
+module.exports = {
+  debug: () => {},
+  getInput: name => process.env[`INPUT_${name.replace(/ /g, '_').toUpperCase()}`] || '',
+  info: () => {},
+  setFailed: () => {}
+}

__tests__/mocks/actions-github.js

@@ -0,0 +1,9 @@
+module.exports = {
+  context: {
+    apiUrl: 'https://api.github.com',
+    repo: {
+      owner: '',
+      repo: ''
+    }
+  }
+}

__tests__/mocks/octokit-action.js

@@ -0,0 +1,3 @@
+class Octokit {}
+
+module.exports = {Octokit}