chore(deps): bump got and ava

Removes [got](https://github.com/sindresorhus/got). It's no longer used after updating ancestor dependency [ava](https://github.com/avajs/ava). These dependencies need to be updated together.


Removes `got`

Updates `ava` from 3.15.0 to 5.3.1
- [Release notes](https://github.com/avajs/ava/releases)
- [Commits](https://github.com/avajs/ava/compare/v3.15.0...v5.3.1)

---
updated-dependencies:
- dependency-name: got
  dependency-type: indirect
- dependency-name: ava
  dependency-type: direct:development
...

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

package.json

@@ -34,7 +34,7 @@
     "@babel/polyfill": "^7.8.3",
     "@babel/preset-env": "^7.8.2",
     "@babel/register": "^7.8.3",
-    "ava": "^3.0.0",
+    "ava": "^5.3.1",
     "babel-eslint": "^10.0.3",
     "babel-loader": "^8.0.6",
     "babel-plugin-add-module-exports": "^1.0.2",