update deependencies

Author: ajaymathur

package.json

@@ -58,7 +58,7 @@
   },
   "devDependencies": {
     "@types/meow": "^5.0.0",
-    "ava": "^2.4.0",
+    "ava": "^3.15.0",
     "fixturez": "^1.0.1",
     "prettier": "1.19.1",
     "sinon": "^7.5.0",