Update to beat.backend.python 1.5.x

advanced/databases/atnt/5.json

advanced/databases/atnt/5.py

advanced/databases/atnt/5.rst

advanced/databases/atvskeystroke/4.json

advanced/databases/atvskeystroke/4.py

advanced/databases/atvskeystroke/4.rst

advanced/databases/avspoof/4.json

advanced/databases/avspoof/4.py

advanced/databases/avspoof/4.rst

advanced/databases/banca/4.json

advanced/databases/banca/4.py

advanced/databases/banca/4.rst

advanced/databases/biosecurid_face/3.json

advanced/databases/biosecurid_face/3.py

advanced/databases/biosecurid_face/3.rst

advanced/databases/biowave/3.json

advanced/databases/biowave/3.py

advanced/databases/biowave/3.rst

advanced/databases/casme2/4.json

advanced/databases/casme2/4.py