Update to glibc 2.34

[HeikoH]

An update 2.34 would be much appreciated, given it addresses some CVEs:

CVE-2021-27645: The nameserver caching daemon (nscd), when processing
a request for netgroup lookup, may crash due to a double-free,
potentially resulting in degraded service or Denial of Service on the
local system. Reported by Chris Schanzle.

CVE-2021-33574: The mq_notify function has a potential use-after-free
issue when using a notification type of SIGEV_THREAD and a thread
attribute with a non-default affinity mask.

CVE-2021-35942: The wordexp function may overflow the positional
parameter number when processing the expansion resulting in a crash.
Reported by Philippe Antoine.

[sgerrand]

Thanks for the reminder! I'll release v2.34 tomorrow. 👌