* Bug 5041: Missing Debug::Extra breaks build on hosts with systemd
A regression was introduced with the fix for bug 5016 in Squid-4.11.
Which shows up as build errors when libsystemd dependency is
added to enable the systemd notify feature explicitly. This release
fixes the regression and actually enables the feature.
* Bug 5030: Negative responses are never cached
This bug shows up as cacheable 4xx and 5xx responses not being
cached despite negative_ttl configuration. This release brings
4xx and 5xx responses inline with the expected caching behaviour.
* SslBump: Disable OpenSSL TLSv1.3 support for older TLS traffic
Squid SSL-Bump features do not support TLS/1.3 protocol.
Previously client or server attempting to use TLS/1.3 would
result in "inappropriate fallback" errors negotiating handshakes.
This release explicitly detects use of TLS/1.3 and disables it.
All users of Squid are urged to upgrade as soon as possible.
See the ChangeLog for the full list of changes in this and earlier