Update gcc11 to version 11.3.1+git1902 / rev 16 via SR 990640
https://build.opensuse.org/request/show/990640
by user rguenther + RBrownFactory
- Update to gcc-11 branch head (a55184ada8e2887ca94c0ab070, git1902
* includes build fixes when building against glibc 2.33.
- Update to the GCC 11.3.0 release.
* includes SLS hardening backport on x86_64. [bsc#1195283]