chore(deps): bump github.com/coreos/butane from 0.21.0 to 0.22.0

Bumps [github.com/coreos/butane](https://github.com/coreos/butane) from 0.21.0 to 0.22.0.
- [Release notes](https://github.com/coreos/butane/releases)
- [Changelog](https://github.com/coreos/butane/blob/main/docs/release-notes.md)
- [Commits](coreos/butane@v0.21.0...v0.22.0)

---
updated-dependencies:
- dependency-name: github.com/coreos/butane
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/Masterminds/sprig v2.22.0+incompatible
 	github.com/ahmetb/gen-crd-api-reference-docs v0.3.0
 	github.com/aws/aws-sdk-go v1.55.5
-	github.com/coreos/butane v0.21.0
+	github.com/coreos/butane v0.22.0
 	github.com/coreos/go-systemd/v22 v22.5.0
 	github.com/gardener/etcd-druid v0.22.4
 	github.com/gardener/gardener v1.101.0

go.sum

@@ -63,8 +63,8 @@ github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMn
 github.com/clarketm/json v1.17.1 h1:U1IxjqJkJ7bRK4L6dyphmoO840P6bdhPdbbLySourqI=
 github.com/clarketm/json v1.17.1/go.mod h1:ynr2LRfb0fQU34l07csRNBTcivjySLLiY1YzQqKVfdo=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/coreos/butane v0.21.0 h1:GDi6XBheEfvxaq7Ez3wxdN+0IraAz3U7QvpVGcbHd84=
-github.com/coreos/butane v0.21.0/go.mod h1:3OKS5qaH58O2yLAKgAtOgBpUQSm7aIOU09IpG+IvmF4=
+github.com/coreos/butane v0.22.0 h1:nmXfiGqJMvPzBd2DfGyoayvO/KjpO6bES4uOEmtGTu8=
+github.com/coreos/butane v0.22.0/go.mod h1:3OKS5qaH58O2yLAKgAtOgBpUQSm7aIOU09IpG+IvmF4=
 github.com/coreos/go-json v0.0.0-20230131223807-18775e0fb4fb h1:rmqyI19j3Z/74bIRhuC59RB442rXUazKNueVpfJPxg4=
 github.com/coreos/go-json v0.0.0-20230131223807-18775e0fb4fb/go.mod h1:rcFZM3uxVvdyNmsAV2jopgPD1cs5SPWJWU5dOz2LUnw=
 github.com/coreos/go-semver v0.3.1 h1:yi21YpKnrx1gt5R+la8n5WgS0kCrsPp33dmEyHReZr4=