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)

chore: roll to Playwright v1.10.0 (microsoft#591)


Co-authored-by: Andrey Lushnikov <lushnikov@chromium.org>

chore: roll driver to 1.9.2 (microsoft#562)

chore: roll Playwright to 1.9.1-1614225150000

feat(inspector): plumb api names metainfo (microsoft#520)

chore: roll to the release-1.8 branch tip