Upgrade to SOPS 3.9.3 and Node 22 LTS

Dockerfile

@@ -9,11 +9,11 @@ RUN tar zxvf /tmp/tarballs/*.tar.gz -C /usr/local/bin/ --strip-components=1 linu
 
 # sops: encrypting secrets
 FROM ubuntu:22.04 as sops
-ARG SOPS_VERSION=3.8.1
+ARG SOPS_VERSION=3.9.3
 ARG ARCH=amd64
 ADD --chmod=755 https://github.com/getsops/sops/releases/download/v${SOPS_VERSION}/sops-v${SOPS_VERSION}.linux.$ARCH /usr/local/bin/sops
 
-FROM node:16-bullseye-slim
+FROM node:22-bookworm-slim
 
 # We need to set a home directory, since both Helm and NPM won't be able to write to /.
 ENV HOME=/tmp/argocd-cdk8s-plugin/