Update dev-dependencies

Author: przemyslawzalewski

package.json

@@ -56,22 +56,22 @@
   },
   "homepage": "https://github.com/sandstreamdev/std",
   "devDependencies": {
-    "@babel/core": "^7.7.5",
-    "@babel/preset-env": "^7.7.6",
-    "@babel/preset-typescript": "^7.7.4",
-    "@types/jest": "^24.0.23",
-    "@typescript-eslint/eslint-plugin": "^2.11.0",
-    "@typescript-eslint/parser": "^2.11.0",
+    "@babel/core": "^7.7.7",
+    "@babel/preset-env": "^7.7.7",
+    "@babel/preset-typescript": "^7.7.7",
+    "@types/jest": "^24.0.24",
+    "@typescript-eslint/eslint-plugin": "^2.12.0",
+    "@typescript-eslint/parser": "^2.12.0",
     "babel-jest": "^24.9.0",
-    "core-js": "^3.4.8",
+    "core-js": "^3.6.0",
     "eslint": "^6.7.2",
     "eslint-plugin-import": "^2.19.1",
     "gh-pages": "^2.1.1",
-    "highlight.js": "^9.17.0",
+    "highlight.js": "^9.17.1",
     "jest": "^24.9.0",
     "p-queue": "^6.2.1",
     "prettier": "^1.19.1",
-    "rollup": "^1.27.10",
+    "rollup": "^1.27.13",
     "typescript": "^3.7.3"
   }
 }