Bump ava from 2.2.0 to 2.3.0

Bumps [ava](https://github.com/avajs/ava) from 2.2.0 to 2.3.0.
- [Release notes](https://github.com/avajs/ava/releases)
- [Commits](avajs/ava@v2.2.0...v2.3.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -108,7 +108,7 @@
 		"resolve": "^1.12.0"
 	},
 	"devDependencies": {
-		"ava": "^2.1.0",
+		"ava": "^2.3.0",
 		"coveralls": "^3.0.6",
 		"cross-env": "^5.2.0",
 		"docdash": "^1.1.1",