update glib-macros dependency
The current version of rust-glib-macros is 0.18 (which corresponds with gtk4 0.7).
Solanum appears to compile and work correctly with rust-glib-macros 0.18.3
The current version of rust-glib-macros is 0.18 (which corresponds with gtk4 0.7).
Solanum appears to compile and work correctly with rust-glib-macros 0.18.3