Changes in 8.2.3

Summary

Security - Bump vulnerable dependencies: #13300
Bumped golang.org/x/net to v0.62.0, github.com/go-jose/go-jose/v4 to v4.1.6
and github.com/klauspost/compress to v1.20.2. The last one fixes GO-2026-6865,
a panic on two-block frames.
#13300
#13365
Bugfix - Fix the data race on the web theme defaults: #13251
The web service kept the theme defaults in a package-level map and merged the
base and branding themes into that shared map on every GET /themes/* request.
Concurrent requests therefore read and wrote the same map at the same time,
which is a data race: it could corrupt the rendered theme, leak values between
themes, or crash the service with a concurrent map read and map write.
The theme defaults are now built fresh for each request, so no state is shared
between concurrent requests.
#13251
Change - Deprecate the owncloudsql environment variables: #13193
We deprecated all environment variables of the owncloudsql driver in the
services storage-users, auth-basic, users, groups, and sharing. The
variables have the name part OWNCLOUDSQL. oCIS 9.0.0 removes the variables
together with the owncloudsql driver.
#13193
Change - Deprecate the posixfs environment variables: #13302
We deprecated all environment variables of the posixfs driver in the
storage-users service. The variables have the name part POSIX. oCIS 9.0.0
removes the variables together with the posixfs driver.
#13302