chore(deps): bump sigs.k8s.io/structured-merge-diff/v6 (#1898)

Bumps [sigs.k8s.io/structured-merge-diff/v6](https://github.com/kubernetes-sigs/structured-merge-diff) from 6.3.0 to 6.3.1.
- [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@v6.3.0...v6.3.1)

---
updated-dependencies:
- dependency-name: sigs.k8s.io/structured-merge-diff/v6
  dependency-version: 6.3.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

go.mod

@@ -37,7 +37,7 @@ require (
 	// Update the CONTROLLER_TOOLS_VERSION in Makefile when bumping controller-tools.
 	sigs.k8s.io/controller-tools v0.19.0
 	sigs.k8s.io/gateway-api v1.3.1-0.20251106052652-079e4774d76b
-	sigs.k8s.io/structured-merge-diff/v6 v6.3.0
+	sigs.k8s.io/structured-merge-diff/v6 v6.3.1
 	sigs.k8s.io/yaml v1.6.0
 )
 

go.sum

@@ -415,7 +415,7 @@ sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730 h1:IpInykpT6ceI+QxKBbEflcR5E
 sigs.k8s.io/json v0.0.0-20250730193827-2d320260d730/go.mod h1:mdzfpAEoE6DHQEN0uh9ZbOCuHbLK5wOm7dK4ctXE9Tg=
 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 v6.3.0 h1:jTijUJbW353oVOd9oTlifJqOGEkUw2jB/fXCbTiQEco=
-sigs.k8s.io/structured-merge-diff/v6 v6.3.0/go.mod h1:M3W8sfWvn2HhQDIbGWj3S099YozAsymCo/wrT5ohRUE=
+sigs.k8s.io/structured-merge-diff/v6 v6.3.1 h1:JrhdFMqOd/+3ByqlP2I45kTOZmTRLBUm5pvRjeheg7E=
+sigs.k8s.io/structured-merge-diff/v6 v6.3.1/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=