Add sanitizers to CI and fix a found test issue

[bjosv]

Update the CI workflow ubuntu:

• Build using the now available GCC 14.
• Build for Release only to use less CPU time.
• Enable sanitizers.

The PR includes:

• Fix global-buffer-overflow in client_test ..where the string length of "*1\r\n,3.14159265358979323846\r\n" is 29.