[compiler-rt] [compiler-rt][test] Use packaging.version.Version to compare glibc versions (PR #142596)

[David Spickett via llvm-commits]

DavidSpickett wrote:

Might require `packaging` to be installed on some buildbots. Linaro gets it from the `python3-packaging` apt package. I will go through zorg and make a list of bots that might be effected.

https://github.com/llvm/llvm-project/pull/142596