Double quotes to expand out the bash var

Author: cryos

ci/tools/env-vars

@@ -15,7 +15,7 @@ if [[ ${#} -ne 1 ]]; then
   exit 1
 fi
 
-PYTHON_VERSION_FORMATTED=$(echo '${PY_VER}' | tr -d '.')
+PYTHON_VERSION_FORMATTED=$(echo "${PY_VER}" | tr -d '.')
 if [[ "${HOST_PLATFORM}" == linux* ]]; then
   CIBW_BUILD="cp${PYTHON_VERSION_FORMATTED}-manylinux*"
   REPO_DIR=$(pwd)