Use std::Format instead of char buffers #4660
Description
As suggested here,
https://github.com/canonical/mir/pull/4593/changes#r2661184043
Replace use of string buffers with std::format.
Can be done throughout codebase.
{{ message }}
As suggested here,
https://github.com/canonical/mir/pull/4593/changes#r2661184043
Replace use of string buffers with std::format.
Can be done throughout codebase.