chore: update edition to 2024 in Cargo.toml

ref https://doc.rust-lang.org/edition-guide/editions/transitioning-an-existing-project-to-a-new-edition.html

Author: ttys3

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
-
 name = "mime_guess2"
 version = "2.0.5"
+edition = "2024"
 authors = ["Austin Bonander <austin.bonander@gmail.com>"]
 license = "MIT"
 description = "A simple crate for detection of a file's MIME type by its extension."

build.rs

@@ -126,11 +126,12 @@ fn build_rev_map<W: Write>(out: &mut W) {
 
     macro_rules! unicase_const {
         ($s:expr) => ({
-            format_args!("{}({:?})", (if $s.is_ascii() {
+            let prefix = if $s.is_ascii() {
                 "UniCase::ascii"
             } else {
                 "UniCase::unicode"
-            }), $s)
+            };
+            format!("{}({:?})", prefix, $s)
         })
     }