[ANNOUNCE] custom-metrics-apiserver v1.34.0 is released

[Hongcai Ren]

## Changes since v1.33.0

### Improvements
* Bump Kubernetes dependencies to v1.34.0 by @RainbowMango in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/217
* Bump Kubernetes dependencies to v1.34.2 by @zroubalik in #222

### Bug fixes
None

### Security
* Fixes CVE-2025-58181, CVE-2025-47914. by @dependabot in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/220

### Others
* Bump the k8s-dependencies group with 6 updates by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/207
* Bump the k8s-dependencies group with 6 updates by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/208
* Bump github.com/spf13/pflag from 1.0.6 to 1.0.7 by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/209
* Bump github.com/google/addlicense from 1.1.1 to 1.2.0 by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/210
* Bump the k8s-dependencies group with 6 updates by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/212
* Bump github.com/emicklei/go-restful/v3 from 3.12.2 to 3.13.0 by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/211
* Bump github.com/stretchr/testify from 1.10.0 to 1.11.0 by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/213
* Bump github.com/spf13/pflag from 1.0.7 to 1.0.9 by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/214
* Bump github.com/stretchr/testify from 1.11.0 to 1.11.1 by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/216
* Bump github.com/spf13/pflag from 1.0.9 to 1.0.10 by @dependabot[bot] in https://github.com/kubernetes-sigs/custom-metrics-apiserver/pull/218