Bump @typescript-eslint/parser from 2.19.2 to 2.20.0 (#6)

Bumps [@typescript-eslint/parser](https://github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/parser) from 2.19.2 to 2.20.0.
- [Release notes](https://github.com/typescript-eslint/typescript-eslint/releases)
- [Changelog](https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/parser/CHANGELOG.md)
- [Commits](https://github.com/typescript-eslint/typescript-eslint/commits/v2.20.0/packages/parser)

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

yarn.lock

@@ -113,13 +113,13 @@
     eslint-scope "^5.0.0"
 
 "@typescript-eslint/parser@^2.19.2":
-  version "2.19.2"
-  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-2.19.2.tgz#21f42c0694846367e7d6a907feb08ab2f89c0879"
-  integrity sha512-8uwnYGKqX9wWHGPGdLB9sk9+12sjcdqEEYKGgbS8A0IvYX59h01o8os5qXUHMq2na8vpDRaV0suTLM7S8wraTA==
+  version "2.20.0"
+  resolved "https://registry.yarnpkg.com/@typescript-eslint/parser/-/parser-2.20.0.tgz#608e5bb06ba98a415b64ace994c79ab20f9772a9"
+  integrity sha512-o8qsKaosLh2qhMZiHNtaHKTHyCHc3Triq6aMnwnWj7budm3xAY9owSZzV1uon5T9cWmJRJGzTFa90aex4m77Lw==
   dependencies:
     "@types/eslint-visitor-keys" "^1.0.0"
-    "@typescript-eslint/experimental-utils" "2.19.2"
-    "@typescript-eslint/typescript-estree" "2.19.2"
+    "@typescript-eslint/experimental-utils" "2.20.0"
+    "@typescript-eslint/typescript-estree" "2.20.0"
     eslint-visitor-keys "^1.1.0"
 
 "@typescript-eslint/typescript-estree@2.19.2":