chore(deps): Bump carvel.dev/ytt from 0.51.0 to 0.51.1 in /webhook/hack

Bumps [carvel.dev/ytt](https://github.com/carvel-dev/ytt) from 0.51.0 to 0.51.1.
- [Release notes](https://github.com/carvel-dev/ytt/releases)
- [Changelog](https://github.com/carvel-dev/ytt/blob/develop/.goreleaser.yml)
- [Commits](carvel-dev/ytt@v0.51.0...v0.51.1)

---
updated-dependencies:
- dependency-name: carvel.dev/ytt
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

webhook/hack/go.mod

@@ -1,11 +1,8 @@
 module github.com/vmware-tanzu/cartographer-conventions/tools
 
 go 1.23.2
-
-toolchain go1.23.3
-
 require (
-	carvel.dev/ytt v0.51.0
+	carvel.dev/ytt v0.51.1
 	golang.org/x/tools v0.28.0
 	reconciler.io/dies/diegen v0.14.0
 	sigs.k8s.io/controller-tools v0.16.5

webhook/hack/go.sum

@@ -1,5 +1,5 @@
-carvel.dev/ytt v0.51.0 h1:mkH/7+WBqYEEv4MAU5CRmjte82NvSwMiMhF4sHfATlA=
-carvel.dev/ytt v0.51.0/go.mod h1:1mkMIMghLgdMp8Lqa0pj92aDyVo3vOd33XplyAxYHM0=
+carvel.dev/ytt v0.51.1 h1:XWM+9tA+rJnhSel3dJf1jgrCES2wHw68cclkQhZcNRM=
+carvel.dev/ytt v0.51.1/go.mod h1:bvN7TWCAHhpPgdulWTQ+gi80aR6TOZ1PJPOEHcKtvQY=
 github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=
 github.com/BurntSushi/toml v1.2.1/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/blang/semver/v4 v4.0.0 h1:1PFHFE6yCCTv8C1TeyNNarDzntLi7wMI5i/pzqYIsAM=