fix(codegen): pins code-generator binaries version (kserve#4533)

Signed-off-by: Bartosz Majsak <bartosz.majsak@gmail.com>

Author: bartoszmajsak

hack/update-codegen.sh

@@ -21,6 +21,7 @@ set -o pipefail
 SCRIPT_DIR="$(dirname "${BASH_SOURCE[0]}")"
 SCRIPT_ROOT="${SCRIPT_DIR}/.."
 CODEGEN_VERSION=$(cd "${SCRIPT_ROOT}" && grep 'k8s.io/code-generator' go.mod | awk '{print $2}')
+KUBE_CODEGEN_TAG=${CODEGEN_VERSION}
 
 # For debugging purposes
 echo "Codegen version ${CODEGEN_VERSION}"