meson: use the custom meson provided intl dependency
Let meson deal with the system differences instead of handling it manually.
The custom dependency was added in meson 0.59, then gained static support with 0.60, and static support for cygwin with 0.61, which is why the meson requirement is bumped to 0.61.
Debian bullseye ships meson 0.56, so switch to bookworm which has 1.0.1
Edited by Christoph Reiter