message: ci(circleci): fix command substitution in helm publish
diff: @@ -14,7 +14,7 @@ git clone git@github.com:specklesystems/helm.git ~/helm
  # before overwriting the chart with the build version, check if the current chart version
  # is not newer than the currently build one
  -CURRENT_VERSION=(cat charts/speckle-server/Chart.yaml | grep ^version | grep -o '2\..*')
  +CURRENT_VERSION=$(cat charts/speckle-server/Chart.yaml | grep ^version | grep -o '2\..*')
  echo ${CURRENT_VERSION}
  ./check_version.py ${CURRENT_VERSION} ${RELEASE_VERSION}
  