[clang] [clang] replaced the usage of `asctime` with `std::put_time` (PR #99075)

[Rainer Orth via cfe-commits]

rorth wrote:

This seems to have broken the [Solaris/amd64](https://lab.llvm.org/staging/#/builders/120/builds/187) and [Solaris/sparcv9](https://lab.llvm.org/buildbot/#/builders/13/builds/1030) buildbots.

https://github.com/llvm/llvm-project/pull/99075