chore(deps): Bump carvel.dev/ytt from 0.54.0 to 0.55.0 in /webhook/hack (#1129)

Bumps [carvel.dev/ytt](https://github.com/carvel-dev/ytt) from 0.54.0 to 0.55.0.
- [Release notes](https://github.com/carvel-dev/ytt/releases)
- [Commits](carvel-dev/ytt@v0.54.0...v0.55.0)

---
updated-dependencies:
- dependency-name: carvel.dev/ytt
  dependency-version: 0.54.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

webhook/hack/go.mod

@@ -3,7 +3,7 @@ module github.com/vmware-tanzu/cartographer-conventions/tools
 go 1.26.0
 
 require (
-	carvel.dev/ytt v0.54.0
+	carvel.dev/ytt v0.55.0
 	golang.org/x/tools v0.45.0
 	reconciler.io/dies/diegen v0.18.0
 	sigs.k8s.io/controller-tools v0.21.0

webhook/hack/go.sum

@@ -1,5 +1,5 @@
-carvel.dev/ytt v0.54.0 h1:adVCwHnAL9cLMYdJZnJG/ax1W1mTYYSmAwIF57NBsfk=
-carvel.dev/ytt v0.54.0/go.mod h1:KB0zsBE4RnIbJfY0aScl2X22lbL61iO6Er6aOhX1M04=
+carvel.dev/ytt v0.55.0 h1:IQCg8FR33U23fbqcP7Zfp5Q8Nj4xYhVuBUUb55gB070=
+carvel.dev/ytt v0.55.0/go.mod h1:H9Id1RrPlSBMAzICLI95SykYKzpg3tsc1O8fMGtwZK0=
 cel.dev/expr v0.25.1 h1:1KrZg61W6TWSxuNZ37Xy49ps13NUovb66QLprthtwi4=
 cel.dev/expr v0.25.1/go.mod h1:hrXvqGP6G6gyx8UAHSHJ5RGk//1Oj5nXQ2NI02Nrsg4=
 github.com/BurntSushi/toml v1.2.1 h1:9F2/+DoOYIOksmaJFPw1tGFy1eDnIJXg+UHjuD8lTak=