fix: inline parse-headers for better ESM interop

package.json

@@ -1,6 +1,6 @@
 {
   "name": "get-it",
-  "version": "8.4.23",
+  "version": "8.4.24-canary.0",
   "description": "Generic HTTP request library for node, browsers and workers",
   "keywords": [
     "request",
@@ -79,8 +79,7 @@
     "test-next"
   ],
   "scripts": {
-    "build": "npm run clean && pkg build --strict && pkg --strict",
-    "clean": "npx rimraf dist coverage",
+    "build": "pkg build --strict --check --clean",
     "coverage": "vitest run --coverage",
     "lint": "eslint . --ext .cjs,.js,.ts --report-unused-disable-directives",
     "prepublishOnly": "npm run build",
@@ -102,7 +101,6 @@
     "into-stream": "^6.0.0",
     "is-retry-allowed": "^2.2.0",
     "is-stream": "^2.0.1",
-    "parse-headers": "^2.0.5",
     "progress-stream": "^2.0.0",
     "tunnel-agent": "^0.6.0"
   },
@@ -128,9 +126,9 @@
     "happy-dom": "12.10.3",
     "ls-engines": "^0.9.1",
     "node-fetch": "^2.6.7",
+    "parse-headers": "2.0.5",
     "prettier": "^3.2.5",
     "prettier-plugin-packagejson": "^2.5.0",
-    "rimraf": "^5.0.1",
     "typescript": "5.4.5",
     "vite": "5.2.9",
     "vitest": "^1.5.0",