chore: pin browserslist deps (#1243)

* chore: pin browserslist deps

* chore: add explicit dev dependency on browserslist modules

Author: jlp-craigmorten

package.json

@@ -70,13 +70,19 @@
   },
   "devDependencies": {
     "@testing-library/jest-dom": "^5.11.6",
+    "browserslist": "4.21.8",
+    "caniuse-lite": "1.0.30001502",
     "jest-in-case": "^1.0.2",
     "jest-snapshot-serializer-ansi": "^1.0.0",
     "jest-watch-select-projects": "^2.0.0",
     "jsdom": "20.0.0",
     "kcd-scripts": "^13.0.0",
     "typescript": "^4.1.2"
   },
+  "overrides": {
+    "browserslist": "4.21.8",
+    "caniuse-lite": "1.0.30001502"
+  },
   "eslintConfig": {
     "extends": [
       "./node_modules/kcd-scripts/eslint.js",