Ignore duplicate key errors for postgres and sqlite for revoked cookies

In a load balancing scenario, the UserSession from more than one server
may end up storing the session same session cookie. This is particularly
true when one rserver routes the request to another for load balancing...
in that case, both rservers will get the same auth cookie to represent
that session.

Now that we invalidate all auth cookies when a user signs out, on all
servers in the cluster, that means some of them will try to insert a
record into the DB that's already there. We just need to ignore those
specific errors.

fix merge

Ignore duplicate key errors for postgres and sqlite for revoked cookies

In a load balancing scenario, the UserSession from more than one server
may end up storing the session same session cookie. This is particularly
true when one rserver routes the request to another for load balancing...
in that case, both rservers will get the same auth cookie to represent
that session.

Now that we invalidate all auth cookies when a user signs out, on all
servers in the cluster, that means some of them will try to insert a
record into the DB that's already there. We just need to ignore those
specific errors.

download R from rstudio-buildtools

improve handling of trailing separator in prefix (rstudio#10612)

Update NEWS-2021.09.2-ghost-orchid.md

Corrected the issue number for one of the feature updates.

update NEWS

Update NEWS-2021.09-ghost-orchid.md

Changed from 2021-08 to 2021-09

Merge pull request rstudio#9403 from rstudio/bugfix/windows-python-en…

…vironments-v2

ensure Python installations can be discovered when no Python on PATH

adjust all job names for tiger-daylily