Update rust edition and naga version

I was using the unstable Span::source_file() function which has been
removed. Replaced with Span::local_file().

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "wgsl-shader-assembler"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
 
 [lib]
 proc-macro = true
@@ -9,5 +9,5 @@ proc-macro = true
 [dependencies]
 quote = "1.0"
 syn = "2.0.90"
-naga = { version = "23.0.0", features = ["wgsl-in"] }
+naga = { version = "25.0.0", features = ["wgsl-in"] }
 regex = "1.11.1"

src/lib.rs

@@ -4,7 +4,8 @@ use {
     naga::front::wgsl,
     proc_macro::TokenStream,
     quote::{format_ident, quote},
-    syn::{parse, LitStr},
+    std::path::Path,
+    syn::{LitStr, parse},
 };
 
 mod source_reader;
@@ -39,9 +40,7 @@ impl ShaderModule {
                 ))
             }
         })?;
-        Ok(Self {
-            source_file,
-        })
+        Ok(Self { source_file })
     }
 
     fn emit_rust_code(&self) -> TokenStream {
@@ -103,7 +102,7 @@ fn parse_input(token_stream: TokenStream) -> Result<WgslModuleMacroInput, Error>
         .next()
         .ok_or(Error::from_message("Expected single string literal."))?;
 
-    let source_dir = token.span().source_file().path().parent().unwrap().into();
+    let source_dir = Path::new(&token.span().local_file().unwrap()).parent().unwrap().into();
     let literal: LitStr = parse(token_stream)?;
     let filename = std::path::Path::new(&literal.value()).into();
     Ok(WgslModuleMacroInput {