Bump defu from 6.1.4 to 6.1.6

Bumps [defu](https://github.com/unjs/defu) from 6.1.4 to 6.1.6.
- [Release notes](https://github.com/unjs/defu/releases)
- [Changelog](https://github.com/unjs/defu/blob/main/CHANGELOG.md)
- [Commits](unjs/defu@v6.1.4...v6.1.6)

---
updated-dependencies:
- dependency-name: defu
  dependency-version: 6.1.6
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

yarn.lock

@@ -10562,9 +10562,9 @@ __metadata:
   linkType: hard
 
 "defu@npm:^6.1.4":
-  version: 6.1.4
-  resolution: "defu@npm:6.1.4"
-  checksum: 2d6cc366262dc0cb8096e429368e44052fdf43ed48e53ad84cc7c9407f890301aa5fcb80d0995abaaf842b3949f154d060be4160f7a46cb2bc2f7726c81526f5
+  version: 6.1.6
+  resolution: "defu@npm:6.1.6"
+  checksum: 6755a914d4d1b40346d582cadf3af0c4efb1b89c462631f4c8a20c933da88d5da674344dd0856426d611d5fc0c65a3ffa82388519127b06f1a688dc103ddf5ba
   languageName: node
   linkType: hard