chore: migrate build process from @vercel/ncc to rollup

package.json

@@ -5,18 +5,20 @@
   "description": "GitHub Action to run `npm audit`",
   "main": "lib/main.js",
   "type": "module",
+  "exports": {
+    ".": "./dist/index.js"
+  },
   "engines": {
     "node": ">=20.0.0"
   },
   "scripts": {
-    "build": "tsc",
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts",
     "lint": "eslint src/**/*.ts",
-    "pack": "ncc build --v8-cache --source-map --target es2020",
+    "pack": "npx rollup --config rollup.config.ts --configPlugin @rollup/plugin-typescript",
     "test": "vitest --run",
     "test:coverage": "vitest --run --coverage",
-    "all": "npm run build && npm run format && npm run lint && npm run pack && npm run test:coverage"
+    "all": "npm run format && npm run lint && npm run test:coverage && npm run pack"
   },
   "repository": {
     "type": "git",
@@ -37,10 +39,12 @@
     "strip-ansi": "^7.1.0"
   },
   "devDependencies": {
+    "@rollup/plugin-commonjs": "^25.0.0",
+    "@rollup/plugin-node-resolve": "^15.0.0",
+    "@rollup/plugin-typescript": "^11.0.0",
     "@types/node": "^20.0.0",
     "@typescript-eslint/eslint-plugin": "^8.31.1",
     "@typescript-eslint/parser": "^8.31.1",
-    "@vercel/ncc": "^0.38.3",
     "@vitest/coverage-v8": "^3.1.2",
     "eslint": "^9.26.0",
     "eslint-define-config": "^2.1.0",
@@ -48,6 +52,8 @@
     "eslint-plugin-github": "^6.0.0",
     "js-yaml": "^4.0.0",
     "prettier": "^3.5.3",
+    "rollup": "^3.0.0",
+    "ts-node": "^10.9.2",
     "typescript": "^5.8.3",
     "vite": "^6.3.4",
     "vitest": "^3.1.2"