Merge pull request #1555 from gtk-rs/dependabot/cargo/proc-macro-crate-3.0

build(deps): update proc-macro-crate requirement from 2.0 to 3.0

Author: sdroege

gtk4-macros/Cargo.toml

@@ -22,7 +22,7 @@ blueprint = []
 [dependencies]
 anyhow = "1.0"
 quick-xml = {version = "0.31", optional = true}
-proc-macro-crate = "2.0"
+proc-macro-crate = "3.0"
 proc-macro-error = "1.0"
 proc-macro2 = "1.0"
 quote = "1.0"