Add conformance test badge for Kubernetes v1.34 (#1661)

Author: tobschli

README.md

@@ -23,7 +23,7 @@ This extension controller supports the following Kubernetes versions:
 
 | Version         | Support | Conformance test results |
 |-----------------|---------|--------------------------|
-| Kubernetes 1.34 | 1.34.0+ | N/A |
+| Kubernetes 1.34 | 1.34.0+ | [![Gardener v1.34 Conformance Tests](https://testgrid.k8s.io/q/summary/conformance-gardener/Gardener,%20v1.34%20AWS/tests_status?style=svg)](https://testgrid.k8s.io/conformance-gardener#Gardener,%20v1.34%20AWS) |
 | Kubernetes 1.33 | 1.33.0+ | [![Gardener v1.33 Conformance Tests](https://testgrid.k8s.io/q/summary/conformance-gardener/Gardener,%20v1.33%20AWS/tests_status?style=svg)](https://testgrid.k8s.io/conformance-gardener#Gardener,%20v1.33%20AWS) |
 | Kubernetes 1.32 | 1.32.0+ | [![Gardener v1.32 Conformance Tests](https://testgrid.k8s.io/q/summary/conformance-gardener/Gardener,%20v1.32%20AWS/tests_status?style=svg)](https://testgrid.k8s.io/conformance-gardener#Gardener,%20v1.32%20AWS) |
 | Kubernetes 1.31 | 1.31.0+ | [![Gardener v1.31 Conformance Tests](https://testgrid.k8s.io/q/summary/conformance-gardener/Gardener,%20v1.31%20AWS/tests_status?style=svg)](https://testgrid.k8s.io/conformance-gardener#Gardener,%20v1.31%20AWS) |