build(deps): bump ajv from 6.12.6 to 7.0.0

Bumps [ajv](https://github.com/ajv-validator/ajv) from 6.12.6 to 7.0.0.
- [Release notes](https://github.com/ajv-validator/ajv/releases)
- [Commits](ajv-validator/ajv@v6.12.6...v7.0.0)

---
updated-dependencies:
- dependency-name: ajv
  dependency-type: direct:production
...

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

package.json

@@ -28,7 +28,7 @@
     "@fortawesome/free-brands-svg-icons": "^5.2.0",
     "@fortawesome/free-solid-svg-icons": "^5.2.0",
     "@fortawesome/react-fontawesome": "^0.1.0",
-    "ajv": "^6.5.2",
+    "ajv": "^7.0.0",
     "autoprefixer": "7.1.6",
     "babel-core": "6.26.0",
     "babel-eslint": "7.2.3",