chore: update typescript-eslint/parser devDep

Author: brettz9

package.json

@@ -22,7 +22,7 @@
     "@babel/plugin-transform-flow-strip-types": "^7.7.4",
     "@babel/preset-env": "^7.7.4",
     "@babel/register": "^7.7.4",
-    "@typescript-eslint/parser": "^2.8.0",
+    "@typescript-eslint/parser": "^2.9.0",
     "babel-eslint": "^10.0.3",
     "babel-plugin-add-module-exports": "^1.0.2",
     "babel-plugin-istanbul": "^5.2.0",