chore: upgrade dev dependencies

Author: Andrew Luca

package-lock.json

@@ -38,15 +38,15 @@
     "@babel/preset-env": "^7.1.6",
     "@size-limit/preset-small-lib": "^4.0.1",
     "babel-core": "^7.0.0-bridge.0",
-    "coveralls": "^3.0.2",
-    "cross-env": "^5.2.0",
+    "coveralls": "^3.0.9",
+    "cross-env": "^7.0.0",
     "eslint": "^5.9.0",
     "eslint-plugin-jest": "^22.0.0",
-    "eslint-plugin-prettier": "^3.0.0",
+    "eslint-plugin-prettier": "^3.1.2",
     "jest": "^23.6.0",
     "jest-fetch-mock": "^1.7.4",
-    "prettier": "^1.15.2",
-    "rimraf": "^2.6.2",
+    "prettier": "^1.19.1",
+    "rimraf": "^2.7.1",
     "rollup": "^0.67.1",
     "rollup-plugin-babel": "^4.0.3",
     "rollup-plugin-commonjs": "^9.2.0",