modify import lines for @actions/* packages

Signed-off-by: Matthew Peveler <[email protected]>

Author: MasterOdin

src/index.ts

@@ -1,5 +1,5 @@
-import core from '@actions/core';
-import github from '@actions/github';
+import * as core from '@actions/core';
+import * as github from '@actions/github';
 import { checkTitle } from './validate';
 
 export function run() {