Add python test step

.github/workflows/push.yml

@@ -47,6 +47,17 @@ jobs:
             source/Hexfile/LICENSE_RELEASE.md
           if-no-files-found: error
 
+  tests:
+    runs-on: ubuntu-20.04
+  steps:
+    - uses: actions/checkout@v2
+
+    - name: Setup
+      run: sudo apt-get update && sudo apt-get install -y python3
+
+    - name: Run python tests
+      run: cd Translations && ./make_translation_test.py
+
   check_formatting:
     runs-on: ubuntu-20.04