fix: use node import behavior

src/index.ts

@@ -1,6 +1,6 @@
 import { install } from "./stages/install";
 import { configure } from "./stages/configure";
-import { push } from "./stages/push.ts";
+import { push } from "./stages/push";
 import { getState, saveState } from "@actions/core";
 
 const isPost = !!getState("isPost");