Bump helm to v3.18.4 (#53)

Co-authored-by: mkjpryor <[email protected]>

Author: azimuth-automation-bot[bot]

Dockerfile

@@ -4,7 +4,7 @@ RUN apt-get update && \
     apt-get install -y curl && \
     rm -rf /var/lib/apt/lists/*
 
-ARG HELM_VERSION=v3.18.3
+ARG HELM_VERSION=v3.18.4
 RUN set -ex; \
     OS_ARCH="$(uname -m)"; \
     case "$OS_ARCH" in \