Bump dev dependencies.

Author: octet-stream

package.json

@@ -40,11 +40,11 @@
   "devDependencies": {
     "@octetstream/eslint-config": "5.0.0",
     "@types/mime-types": "2.1.0",
-    "@types/node": "16.4.5",
+    "@types/node": "16.4.7",
     "@typescript-eslint/eslint-plugin": "4.28.5",
     "@zoltu/typescript-transformer-append-js-extension": "1.0.1",
     "ava": "3.15.0",
-    "c8": "7.7.3",
+    "c8": "7.8.0",
     "eslint": "7.31.0",
     "eslint-config-airbnb-typescript": "12.3.1",
     "eslint-plugin-ava": "12.0.0",