Update requests to 2.28.1#155

pyup-bot wants to merge 1 commit intomasterlimberger/libpythonpro:masterfrom

pyup-update-requests-2.25.1-to-2.28.1limberger/libpythonpro:pyup-update-requests-2.25.1-to-2.28.1Copy head branch name to clipboard