[compiler-rt] [lldb] Replace Python's deprecated tempfile.mktemp() with secure temp APIs (PR #210123)

[David Spickett via llvm-commits]

https://github.com/DavidSpickett approved this pull request.

LLDB parts look correct to me. Putting them in their own PR is ideal but I'm not bothered too much because the examples are not critical to lldb.

Ping me on the other PR if you do make one.

https://github.com/llvm/llvm-project/pull/210123