Update dependency ava to v3.7.1 (#67)

Author: renovate-bot

package.json

@@ -40,7 +40,7 @@
     "@types/bytes": "3.1.0",
     "@types/mri": "1.1.0",
     "@types/node": "12.12.36",
-    "ava": "3.5.1",
+    "ava": "3.7.1",
     "husky": "4.2.5",
     "lint-staged": "10.1.6",
     "np": "https://github.com/pixelastic/np/tarball/c3ab2e3b053c7da0ce40a572ca1616273ac080f8",