build(deps): bump @actions/tool-cache from 3.0.0 to 4.0.0

__tests__/index.test.ts

@@ -2,15 +2,17 @@
  * Unit tests for the action's entrypoint, src/index.ts
  */
 
-import * as main from '../src/main'
+import { jest, describe, it, expect } from '@jest/globals'
 
-// Mock the action's entrypoint
-const runMock = jest.spyOn(main, 'run').mockImplementation()
+const runMock = jest.fn<() => Promise<void>>()
+
+jest.unstable_mockModule('../src/main', () => ({
+  run: runMock
+}))
 
 describe('index', () => {
   it('calls run when imported', async () => {
-    // eslint-disable-next-line @typescript-eslint/no-require-imports
-    require('../src/index')
+    await import('../src/index')
 
     expect(runMock).toHaveBeenCalled()
   })

package.json

@@ -26,13 +26,13 @@
     "format:check": "prettier --check **/*.ts",
     "lint": "npx eslint",
     "package": "ncc build src/index.ts",
-    "test": "jest"
+    "test": "NODE_OPTIONS='--experimental-vm-modules' jest"
   },
   "jest": {
-    "preset": "ts-jest",
     "verbose": true,
     "clearMocks": true,
     "testEnvironment": "node",
+    "extensionsToTreatAsEsm": [".ts"],
     "moduleFileExtensions": [
       "js",
       "ts"
@@ -45,13 +45,13 @@
       "/dist/"
     ],
     "transform": {
-      "^.+\\.ts$": "ts-jest"
+      "^.+\\.ts$": ["ts-jest", { "useESM": true }]
     }
   },
   "dependencies": {
     "@actions/core": "^2.0.1",
     "@actions/github": "^6.0.1",
-    "@actions/tool-cache": "^3.0.0",
+    "@actions/tool-cache": "^4.0.0",
     "semver": "^7.7.4"
   },
   "devDependencies": {