chore(deps): update dependency defu to v6

Author: renovate[bot]

package.json

@@ -26,7 +26,7 @@
     "test": "yarn lint && yarn jest"
   },
   "dependencies": {
-    "defu": "^4.0.1",
+    "defu": "^6.1.4",
     "hookable": "^4.4.1",
     "jiti": "^1.9.1"
   },

yarn.lock

@@ -4221,10 +4221,10 @@ defu@^3.2.2:
   resolved "https://registry.yarnpkg.com/defu/-/defu-3.2.2.tgz#be20f4cc49b9805d54ee6b610658d53894942e97"
   integrity sha512-8UWj5lNv7HD+kB0e9w77Z7TdQlbUYDVWqITLHNqFIn6khrNHv5WQo38Dcm1f6HeNyZf0U7UbPf6WeZDSdCzGDQ==
 
-defu@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/defu/-/defu-4.0.1.tgz#9d7d7a48f9295f08285d153dcff174c89b9bcb22"
-  integrity sha512-lC+G0KvvWRbisQa50+iFelm3/eMmwo4IlBmfASOVlw9MZpHHyQeVsZxc5j23+TQy5ydgEoTVSrWl7ptou1kzJQ==
+defu@^6.1.4:
+  version "6.1.4"
+  resolved "https://registry.yarnpkg.com/defu/-/defu-6.1.4.tgz#4e0c9cf9ff68fe5f3d7f2765cc1a012dfdcb0479"
+  integrity sha512-mEQCMmwJu317oSz8CwdIOdwf3xMif1ttiM8LTufzc3g6kR+9Pe236twL8j3IYT1F7GfRgGcW6MWxzZjLIkuHIg==
 
 delayed-stream@~1.0.0:
   version "1.0.0"