Switch to cursor_split feature

The `cursor_remaining` feature was replaced by that:
https://github.com/rust-lang/rust/pull/109174

lib/sdk/src/filetype/texture.rs

@@ -535,6 +535,8 @@ impl Texture {
             .to_binary(&mut out_data)
             .wrap_err("Failed to write DX10 header")?;
 
+        // If there is stream data, we build the mipmap data from it.
+        // If not, we take whatever is left in the bundle file.
         if let Some(stream) = &self.stream {
             let data = Self::reorder_stream_mipmap(
                 stream,
@@ -549,8 +551,9 @@ impl Texture {
                 .write_all(&data)
                 .wrap_err("Failed to write streamed mipmap data")?;
         } else {
+            let (_, remaining) = data.split();
             out_data
-                .write_all(data.remaining_slice())
+                .write_all(remaining)
                 .wrap_err("Failed to write texture data")?;
         };
 

lib/sdk/src/lib.rs

@@ -1,4 +1,4 @@
-#![feature(cursor_remaining)]
+#![feature(cursor_split)]
 #![feature(test)]
 
 mod binary;