message: fix(ci): fix packaging script for Windows MSI
  After which undid one layer of string nesting,
  I forgot to take care of the corresponding escapes which should
  also have been removed.
diff: @@ -25,9 +25,9 @@ else
  if [[ "$OS" == "Windows_NT" && "$DISTRIBUTION_BUILD_VARIANT" == "win32msi-x64" ]]; then
  # We have to setup a python venv for the notary client to work
  # in order to sign the MSI
  - export PATH="/cygdrive/c/Python27:\$PATH"
  + export PATH="/cygdrive/c/Python27:$PATH"
  # python --version prints to stderr...
  - if [[ ! "\$(python --version 2>&1 | tr -d '\r')" =~ "2.7" ]]; then
  + if [[ ! "$(python --version 2>&1 | tr -d '\r')" =~ "2.7" ]]; then
  echo "FAIL: could not properly setup Python 2.7"
  exit 1
  fi
  