chore(deps-dev): bump ajv from 6.12.0 to 6.12.3

Bumps [ajv](https://github.com/ajv-validator/ajv) from 6.12.0 to 6.12.3.
- [Release notes](https://github.com/ajv-validator/ajv/releases)
- [Commits](https://github.com/ajv-validator/ajv/compare/v6.12.0...v6.12.3)

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

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

package.json

@@ -17,7 +17,7 @@
     "@babel/plugin-syntax-optional-chaining": "^7.8.3",
     "@babel/preset-env": "^7.11.0",
     "@tophat/eslint-config": "^0.6.0",
-    "ajv": "^6.12.0",
+    "ajv": "^6.12.3",
     "babel-eslint": "^10.1.0",
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.10.0",

yarn.lock

@@ -1301,10 +1301,10 @@ acorn@^7.1.0, acorn@^7.1.1:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.1.1.tgz#e35668de0b402f359de515c5482a1ab9f89a69bf"
   integrity sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==
 
-ajv@^6.10.0, ajv@^6.10.2, ajv@^6.12.0, ajv@^6.5.5:
-  version "6.12.0"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.0.tgz#06d60b96d87b8454a5adaba86e7854da629db4b7"
-  integrity sha512-D6gFiFA0RRLyUbvijN74DWAjXSFxWKaWP7mldxkVhyhAV3+SWA9HEJPHQ2c9soIeTFJqcSdFDGFgdqs1iUU2Hw==
+ajv@^6.10.0, ajv@^6.10.2, ajv@^6.12.3, ajv@^6.5.5:
+  version "6.12.3"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.3.tgz#18c5af38a111ddeb4f2697bd78d68abc1cabd706"
+  integrity sha512-4K0cK3L1hsqk9xIb2z9vs/XU+PGJZ9PNpJRDS9YLzmNdX6jmVPfamLvTJr0aDAusnHyCHO6MjzlkAsgtqp9teA==
   dependencies:
     fast-deep-equal "^3.1.1"
     fast-json-stable-stringify "^2.0.0"