feat(roll): roll Playwright 1.15.0-1631797286000 (microsoft#910)

feat(roll): roll Playwright 1.14.0-1629718845000 (microsoft#864)

chore: roll to 1.14 branch tot (microsoft#845)

chore: roll driver to 1.13.1-1627519339000 (microsoft#826)

feat(roll): roll Playwright to 1.13.0-1626733671000 (microsoft#814)

release-1.12: roll new driver (microsoft#751)

feat(roll): roll Playwright to 1.12.0-1623185968000 (microsoft#747)

chore: roll driver to 1.11.1-1621490832000 (microsoft#704)

Revert "fix: restrict installation to Ubuntu 18.04 (microsoft#665)"

This reverts commit 53cf799.

On apt based PIP installations only PIP 20.0.2 is shippd, so we can't
assume that they have a PIP which is >= 20.3 currently. Maybe in 1-2 years.

test: unflake test_timeout_waiting_for_stable_position test (microsof…

…t#671)