fix(typescript-estree): update TS version range (#3127)

Author: kentcdodds

Diff for: packages/typescript-estree/src/parser.ts

@@ -25,7 +25,7 @@ const log = debug('typescript-eslint:typescript-estree:parser');
  * This needs to be kept in sync with the top-level README.md in the
  * typescript-eslint monorepo
  */
-const SUPPORTED_TYPESCRIPT_VERSIONS = '>=3.3.1 <4.2.0';
+const SUPPORTED_TYPESCRIPT_VERSIONS = '>=3.3.1 <4.3.0';
 /*
  * The semver package will ignore prerelease ranges, and we don't want to explicitly document every one
  * List them all separately here, so we can automatically create the full string