Bump carvel.dev/ytt from 0.49.1 to 0.51.1 in /hack/tools (#383)

Bumps [carvel.dev/ytt](https://github.com/carvel-dev/ytt) from 0.49.1 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@v0.49.1...v0.51.1)

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

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

Author: dependabot[bot]

hack/tools/go.mod

@@ -1,10 +1,10 @@
 module gitlab.eng.vmware.com/core-build/tkg-connectivity/hack/tools
 
 go 1.22
-toolchain go1.22.5
+toolchain go1.23.6
 
 require (
-	carvel.dev/ytt v0.49.1
+	carvel.dev/ytt v0.51.1
 	github.com/onsi/ginkgo v1.16.5
 	k8s.io/code-generator v0.30.2
 	sigs.k8s.io/controller-tools v0.14.0

hack/tools/go.sum

@@ -1,5 +1,5 @@
-carvel.dev/ytt v0.49.1 h1:s9Qnb+wMsSRvaT08E4U7WCumwPs2kgdlIEfJ3G1NPeo=
-carvel.dev/ytt v0.49.1/go.mod h1:8ytmTEAsjvkDfNNV3U4ex/DoumV4JqnkIgaZgxqPxNQ=
+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 v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0=
 github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/alessio/shellescape v1.4.2 h1:MHPfaU+ddJ0/bYWpgIeUnQUqKrlJ1S7BfEYPM4uEoM0=