Pytanis 0.7.1

Changes

• Pin gspread to <6.0 because in 6.0 the API changed and broke Pytanis

Pytanis 0.7

Changes

• Switched for reproducability to hatch-pip-compile
• A few fixes to make mypy happy
• Some more pydantic v2 deprecations migrated to new API
• Renamed GSheetClient to GSheetsClient
• Added Gspread service user authentication