Update Helm package to v3.18.4 in Containerfile.helm

Author: immxmmi

ci/Containerfile.helm

@@ -1,6 +1,6 @@
 FROM registry.access.redhat.com/ubi9:9.5-1745854298
 
-ARG HELM_PACKAGE=https://get.helm.sh/helm-v3.16.3-linux-amd64.tar.gz
+ARG HELM_PACKAGE=https://get.helm.sh/helm-v3.18.4-linux-amd64.tar.gz
 ARG HELM_UNITTEST_PACKAGE=https://github.com/helm-unittest/helm-unittest/releases/download/v0.7.0/helm-unittest-linux-amd64-0.7.0.tgz
 ARG YQ_PACKAGE=https://github.com/mikefarah/yq/releases/download/v4.44.6/yq_linux_amd64.tar.gz