CI: install optional dependencies, too

.github/workflows/test-eynollah.yml

@@ -36,7 +36,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install .
+        pip install .[OCR,plotting]
         pip install -r requirements-test.txt
     - name: Test with pytest
       run: make test