Also install ft-client in linux CI

.github/workflows/ci.yml

@@ -60,11 +60,12 @@ jobs:
         export TA_LIBRARY_PATH=${HOME}/dependencies/lib
         export TA_INCLUDE_PATH=${HOME}/dependencies/include
         pip install -r requirements-dev.txt
+        pip install -e ft_client/
         pip install -e .
 
     - name: Check for version alignment
       run: |
-        build_helpers/freqtrade_client_version_align.py
+        python build_helpers/freqtrade_client_version_align.py
 
     - name: Tests
       run: |