fix pip installs on github actions: add deepl dependency

Author: ArdenButterfield

.github/workflows/deploy.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Pre-process data
         run: |
           cd Input\ Processing
-          pip install openpyxl
+          pip install openpyxl deepl
           python parse_annotations_xlsx.py
           python getBarMappingsDummyMeasurebounds.py
           cd ..