Adapt to libfmt 9.1.0

[davidrohr]

@cuveland : This should adapt DD to new libfmt, which has removed make_format_args (https://github.com/fmtlib/fmt/pull/2760/files)

[cuveland]

@davidrohr Thanks for the fix! This works well.

To enable compile-time checking of the format string, the recommended way seems to be to use fmt::format_string<T...> as described in this post. That does require C++20 support, however, so I leave this as a comment here for a potential future improvement.

[davidrohr]

@cuveland : thx, could you create a new minor tag with this fix?

[cuveland]

@davidrohr: done, see v1.5.2