chore(deps): pin dependencies (#121)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -51,10 +51,10 @@
     "@types/jest": "24.0.25",
     "@types/react": "16.9.17",
     "@types/react-dom": "16.9.4",
-    "@types/react-test-renderer": "^16.9.1",
+    "@types/react-test-renderer": "16.9.1",
     "@types/sinon": "7.0.13",
     "@typescript-eslint/eslint-plugin": "2.14.0",
-    "@typescript-eslint/parser": "^2.14.0",
+    "@typescript-eslint/parser": "2.14.0",
     "browser-env": "3.2.6",
     "cache-loader": "4.1.0",
     "enzyme": "3.10.0",
@@ -83,9 +83,9 @@
     "thread-loader": "2.1.2",
     "ts-jest": "24.0.2",
     "ts-loader": "6.0.4",
-    "typescript": "^3.7.4",
-    "webpack": "^4.41.5",
-    "webpack-cli": "^3.3.10"
+    "typescript": "3.7.4",
+    "webpack": "4.41.5",
+    "webpack-cli": "3.3.10"
   },
   "pre-commit": [
     "build:all",