🌱 Bump sigs.k8s.io/structured-merge-diff/v6 (#2681)

Bumps the k8s-dependencies group with 1 update: [sigs.k8s.io/structured-merge-diff/v6](https://github.com/kubernetes-sigs/structured-merge-diff).


Updates `sigs.k8s.io/structured-merge-diff/v6` from 6.3.2 to 6.4.0
- [Release notes](https://github.com/kubernetes-sigs/structured-merge-diff/releases)
- [Changelog](https://github.com/kubernetes-sigs/structured-merge-diff/blob/master/RELEASE.md)
- [Commits](kubernetes-sigs/structured-merge-diff@v6.3.2...v6.4.0)

---
updated-dependencies:
- dependency-name: sigs.k8s.io/structured-merge-diff/v6
  dependency-version: 6.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: k8s-dependencies
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

go.mod

@@ -49,7 +49,7 @@ require (
 	sigs.k8s.io/controller-runtime v0.23.3
 	sigs.k8s.io/controller-tools v0.20.1
 	sigs.k8s.io/crdify v0.5.1-0.20260309184313-54162f2e3097
-	sigs.k8s.io/structured-merge-diff/v6 v6.3.2
+	sigs.k8s.io/structured-merge-diff/v6 v6.4.0
 	sigs.k8s.io/yaml v1.6.0
 )
 

go.sum

@@ -824,7 +824,7 @@ sigs.k8s.io/kustomize/kyaml v0.21.1 h1:IVlbmhC076nf6foyL6Taw4BkrLuEsXUXNpsE+ScX7
 sigs.k8s.io/kustomize/kyaml v0.21.1/go.mod h1:hmxADesM3yUN2vbA5z1/YTBnzLJ1dajdqpQonwBL1FQ=
 sigs.k8s.io/randfill v1.0.0 h1:JfjMILfT8A6RbawdsK2JXGBR5AQVfd+9TbzrlneTyrU=
 sigs.k8s.io/randfill v1.0.0/go.mod h1:XeLlZ/jmk4i1HRopwe7/aU3H5n1zNUcX6TM94b3QxOY=
-sigs.k8s.io/structured-merge-diff/v6 v6.3.2 h1:kwVWMx5yS1CrnFWA/2QHyRVJ8jM6dBA80uLmm0wJkk8=
-sigs.k8s.io/structured-merge-diff/v6 v6.3.2/go.mod h1:M3W8sfWvn2HhQDIbGWj3S099YozAsymCo/wrT5ohRUE=
+sigs.k8s.io/structured-merge-diff/v6 v6.4.0 h1:qmp2e3ZfFi1/jJbDGpD4mt3wyp6PE1NfKHCYLqgNQJo=
+sigs.k8s.io/structured-merge-diff/v6 v6.4.0/go.mod h1:M3W8sfWvn2HhQDIbGWj3S099YozAsymCo/wrT5ohRUE=
 sigs.k8s.io/yaml v1.6.0 h1:G8fkbMSAFqgEFgh4b1wmtzDnioxFCUgTZhlbj5P9QYs=
 sigs.k8s.io/yaml v1.6.0/go.mod h1:796bPqUfzR/0jLAl6XjHl3Ck7MiyVv8dbTdyT3/pMf4=