fix: labels and assignees no longer required

Author: peterwoodworth

src/issue.ts

@@ -1,9 +1,12 @@
 import * as core from "@actions/core";
 import levenshtein from 'js-levenshtein';
 
-export interface IParameter {
+export interface IParameter extends IDefaultArea {
   area: string;
   keywords: string[];
+}
+
+export interface IDefaultArea {
   labels?: string[];
   assignees?: string[];
 }