chore(deps): update dependency ava to v3.12.0

Author: renovate-bot

package-lock.json

@@ -11,7 +11,7 @@
   "devDependencies": {
     "@commitlint/cli": "8.3.5",
     "@commitlint/config-conventional": "8.3.4",
-    "ava": "3.11.1",
+    "ava": "3.12.0",
     "babel-cli": "6.26.0",
     "babel-plugin-istanbul": "4.1.6",
     "babel-preset-env": "1.7.0",