Migrate to ESM and upgrade dependencies (#752)

* Migrate to ESM and upgrade dependencies

* Address review: use type-only import for QualityOptions

* update version to 6.0.0 in package.json and package-lock.json

* Add ESM migration note to README for V6

* Update test imports for ESM and clean up devDependencies (ts-node, @types/jest)

* Pin @types/node to 24.x and refine tsconfig/README wording

package.json

@@ -1,6 +1,7 @@
 {
   "name": "setup-dotnet",
-  "version": "5.4.0",
+  "version": "6.0.0",
+  "type": "module",
   "private": true,
   "description": "setup dotnet action",
   "main": "dist/setup/index.js",
@@ -9,12 +10,12 @@
   },
   "scripts": {
     "build": "ncc build -o dist/setup src/setup-dotnet.ts && ncc build -o dist/cache-save src/cache-save.ts",
-    "format": "prettier --no-error-on-unmatched-pattern --config ./.prettierrc.js --write \"**/*.{ts,yml,yaml}\"",
-    "format-check": "prettier --no-error-on-unmatched-pattern --config ./.prettierrc.js --check \"**/*.{ts,yml,yaml}\"",
-    "lint": "eslint --config ./.eslintrc.js \"**/*.ts\"",
-    "lint:fix": "eslint --config ./.eslintrc.js \"**/*.ts\" --fix",
+    "format": "prettier --no-error-on-unmatched-pattern --write \"**/*.{ts,yml,yaml}\"",
+    "format-check": "prettier --no-error-on-unmatched-pattern --check \"**/*.{ts,yml,yaml}\"",
+    "lint": "eslint \"**/*.ts\"",
+    "lint:fix": "eslint \"**/*.ts\" --fix",
     "prepare": "husky install",
-    "test": "jest --coverage --config ./jest.config.js",
+    "test": "node --experimental-vm-modules ./node_modules/jest/bin/jest.js --coverage",
     "update-installers": "nwget https://dot.net/v1/dotnet-install.ps1 -O externals/install-dotnet.ps1 && nwget https://dot.net/v1/dotnet-install.sh -O externals/install-dotnet.sh"
   },
   "repository": {
@@ -29,41 +30,37 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "^5.1.0",
-    "@actions/core": "^2.0.3",
-    "@actions/exec": "^2.0.0",
-    "@actions/github": "^6.0.0",
-    "@actions/glob": "^0.5.1",
-    "@actions/http-client": "^3.0.2",
-    "@actions/io": "^2.0.0",
-    "fast-xml-parser": "^5.9.2",
+    "@actions/cache": "^6.1.0",
+    "@actions/core": "^3.0.1",
+    "@actions/exec": "^3.0.0",
+    "@actions/github": "^9.1.1",
+    "@actions/glob": "^0.7.0",
+    "@actions/http-client": "^4.0.1",
+    "@actions/io": "^3.0.2",
+    "fast-xml-parser": "^5.9.3",
     "json5": "^2.2.3",
-    "semver": "^7.6.0"
+    "semver": "^7.8.5"
   },
   "devDependencies": {
-    "@types/jest": "^29.5.12",
-    "@types/node": "^24.1.0",
-    "@types/semver": "^7.5.8",
-    "@typescript-eslint/eslint-plugin": "^8.0.0",
-    "@typescript-eslint/parser": "^8.0.0",
-    "@vercel/ncc": "^0.38.1",
-    "eslint": "^8.57.0",
-    "eslint-config-prettier": "^10.1.5",
-    "eslint-plugin-jest": "^29.0.1",
-    "eslint-plugin-node": "^11.1.0",
+    "@eslint/js": "^10.0.1",
+    "@jest/globals": "^30.4.1",
+    "@types/node": "^24.13.2",
+    "@types/semver": "^7.7.0",
+    "@typescript-eslint/eslint-plugin": "^8.62.0",
+    "@typescript-eslint/parser": "^8.62.0",
+    "@vercel/ncc": "^0.44.0",
+    "eslint": "^10.5.0",
+    "eslint-config-prettier": "^10.1.8",
+    "eslint-plugin-jest": "^29.15.2",
+    "eslint-plugin-n": "^18.1.0",
+    "globals": "^17.7.0",
     "husky": "^9.1.7",
-    "jest": "^29.7.0",
-    "jest-circus": "^29.7.0",
-    "jest-each": "^29.7.0",
-    "prettier": "^3.2.5",
-    "ts-jest": "^29.1.2",
-    "typescript": "^5.9.2",
+    "jest": "^30.4.2",
+    "jest-circus": "^30.4.2",
+    "jest-each": "^30.0.0",
+    "prettier": "^3.8.4",
+    "ts-jest": "^29.4.11",
+    "typescript": "^6.0.3",
     "wget-improved": "^3.2.1"
-  },
-  "overrides": {
-    "undici": "^6.24.1"
-  },
-  "jest": {
-    "testEnvironment": "node"
   }
 }