refactor: replaced tsc with tsup

Author: 1uweb

dist/index.cjs

@@ -2,10 +2,10 @@
   "name": "autodev-action",
   "version": "v2.1.0",
   "description": "Github Action that tries to merge all commits from a PR with the dev label into the dev branch.",
-  "main": "lib/index.js",
+  "main": "lib/index.cjs",
   "type": "module",
   "scripts": {
-    "build": "tsc",
+    "build": "tsup --legal-comments=linked",
     "format": "prettier --write '**/*.ts'",
     "format-check": "prettier --check '**/*.ts'",
     "lint": "eslint src/**/*.ts",
@@ -42,6 +42,7 @@
     "eslint-plugin-simple-import-sort": "^12.1.1",
     "js-yaml": "^4.1.0",
     "prettier": "3.3.2",
+    "tsup": "^8.3.5",
     "typescript": "^5.6.3",
     "typescript-eslint": "^8.11.0",
     "vitest": "^2.1.3"