[Snyk] Security upgrade serverless-python-requirements from 3.3.1 to 4.0.0#6

Fab-T wants to merge 1 commit intomasterHumanCellAtlas/metadata-spreadsheet-tools:masterfrom

snyk-fix-cbf3d7d2c41c7fbbdf6df5fa8454a7aaHumanCellAtlas/metadata-spreadsheet-tools:snyk-fix-cbf3d7d2c41c7fbbdf6df5fa8454a7aaCopy head branch name to clipboard