chore(release): prepare for 1.6.6 (#369)

## [1.6.6] - 2026-06-06

### 🐛 Bug Fixes

- *(deps)* Update kubernetes monorepo to v0.36.1 (#360)

### ⚙️ Miscellaneous Tasks

- *(deps)* Update golang:1.26.3 docker digest to 54d3246 (#362)
- *(deps)* Update go toolchain directive to v1.26.4 [security] (#366)
- *(deps)* Update golang docker tag to v1.26.4 (#368)

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Reviewed-on: #369
Co-authored-by: Unbound Releaser <releaser@unbound.se>
Co-committed-by: Unbound Releaser <releaser@unbound.se>

.version

@@ -1,3 +1,3 @@
 {
-  "version": "1.6.5"
+  "version": "1.6.6"
 }