Synchronize versions between Makefile, Containerfile, e2e config and go.mod

Author: lentzi90

Makefile

@@ -60,7 +60,7 @@ SETUP_ENVTEST := $(abspath $(TOOLS_BIN_DIR)/$(SETUP_ENVTEST_BIN)-$(SETUP_ENVTEST
 SETUP_ENVTEST_PKG := sigs.k8s.io/controller-runtime/tools/setup-envtest
 
 # Kubebuilder
-export KUBEBUILDER_ENVTEST_KUBERNETES_VERSION ?= 1.23.3
+export KUBEBUILDER_ENVTEST_KUBERNETES_VERSION ?= 1.25.0
 export KUBEBUILDER_CONTROLPLANE_START_TIMEOUT ?= 60s
 export KUBEBUILDER_CONTROLPLANE_STOP_TIMEOUT ?= 60s
 

go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/cluster-api-provider-openstack
 
-go 1.17
+go 1.18
 
 require (
 	github.com/blang/semver v3.5.1+incompatible