Update jest monorepo to v28 (major) (#240)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

package.json

@@ -41,14 +41,14 @@
     "eslint-config-amo": "^5.0.0",
     "eslint-plugin-amo": "^1.10.2",
     "express": "4.18.1",
-    "jest": "^27.0.0",
+    "jest": "^28.0.0",
     "prettier": "2.6.2",
     "pretty-quick": "^3.0.0",
     "rimraf": "^3.0.0",
     "safe-compare": "1.1.4",
     "sinon": "^14.0.0",
     "supertest": "^6.0.0",
-    "ts-jest": "^27.0.0",
+    "ts-jest": "^28.0.0",
     "type-coverage": "^2.3.0",
     "typescript": "^4.0.0"
   },