build: update various CI dependencies

- kind to v0.12.0
- kubectl to v1.23.6
- helm to v3.8.2
- runner to v2.291.1

Signed-off-by: Hidde Beydals <hello@hidde.co>

.github/runners/prereq.sh

@@ -18,11 +18,11 @@
 
 set -eu
 
-KIND_VERSION=0.11.1
-KUBECTL_VERSION=1.21.2
-KUSTOMIZE_VERSION=4.1.3
-HELM_VERSION=3.7.2
-GITHUB_RUNNER_VERSION=2.285.1
+KIND_VERSION=0.12.0
+KUBECTL_VERSION=1.23.6
+KUSTOMIZE_VERSION=4.5.4
+HELM_VERSION=3.8.2
+GITHUB_RUNNER_VERSION=2.291.1
 PACKAGES="apt-transport-https ca-certificates software-properties-common build-essential libssl-dev gnupg lsb-release jq pkg-config"
 
 # install prerequisites