Update kindest/node Docker tag to v1.33.7 (#740)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Makefile

@@ -160,7 +160,7 @@ kind-up kind-down: export KUBECONFIG = $(KIND_KUBECONFIG)
 
 .PHONY: kind-up
 kind-up: $(KIND) $(KUBECTL) ## Launch a kind cluster for local development and testing.
-	$(KIND) create cluster --name sharding --config hack/config/kind-config.yaml --image kindest/node:v1.33.4@sha256:25a6018e48dfcaee478f4a59af81157a437f15e6e140bf103f85a2e7cd0cbbf2
+	$(KIND) create cluster --name sharding --config hack/config/kind-config.yaml --image kindest/node:v1.33.7@sha256:d26ef333bdb2cbe9862a0f7c3803ecc7b4303d8cea8e814b481b09949d353040
 	# workaround https://kind.sigs.k8s.io/docs/user/known-issues/#pod-errors-due-to-too-many-open-files
 	$(KUBECTL) get nodes -o name | cut -d/ -f2 | xargs -I {} docker exec {} sh -c "sysctl fs.inotify.max_user_instances=8192"
 	# run `export KUBECONFIG=$$PWD/hack/kind_kubeconfig.yaml` to target the created kind cluster.