add tzdata to dockerfile (#4153)

zarf/docker/Dockerfile.production

@@ -1,7 +1,7 @@
 # All build artifacts are built in github actions, and copied in
 # Ubuntu is used to match Github action, and use github action caching instead of docker caching
 FROM ubuntu as runner
-RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates
+RUN apt-get update && apt-get install -y --no-install-recommends ca-certificates tzdata
 
 WORKDIR /porter
 COPY bin/app /porter/