masonry: Update MSRV to 1.75 from 1.65

The code currently uses some API that is not available in Rust 1.65:

* `is_ok_and` from 1.70
* `next_multiple_of` from 1.73

Vello requires 1.75.

crates/masonry/Cargo.toml

@@ -8,7 +8,7 @@ license = "Apache-2.0"
 name = "masonry"
 readme = "README.md"
 repository = "https://github.com/PoignardAzur/masonry-rs"
-rust-version = "1.65"
+rust-version = "1.75"
 version = "0.1.3"
 
 [profile.dev.package."*"]