Update to the latest Substrate commit

Enables building with only the stable toolchain. The nightly toolchain is still
used for clippy in order to access additional checks.

.github/actions/build-dependencies/action.yml

@@ -37,16 +37,6 @@ runs:
       with:
         toolchain: ${{ inputs.rust-toolchain }}
         components: ${{ inputs.rust-components }}
-
-    - name: Get nightly version to use
-      id: nightly
-      shell: bash
-      run: echo "version=$(cat .github/nightly-version)" >> $GITHUB_OUTPUT
-
-    - name: Install WASM toolchain
-      uses: dtolnay/rust-toolchain@master
-      with:
-        toolchain: ${{ steps.nightly.outputs.version }}
         targets: wasm32-unknown-unknown
 
     - name: Cache Rust

docs/Getting Started.md

@@ -27,6 +27,7 @@ brew install rustup
 ```
 rustup update
 rustup toolchain install stable
+rustup target add wasm32-unknown-unknown
 rustup toolchain install nightly
 rustup target add wasm32-unknown-unknown --toolchain nightly
 ```

substrate/serai/client/src/serai/scale_value.rs

@@ -4,7 +4,7 @@ use subxt::ext::scale_value::{Composite, ValueDef, Value, scale};
 
 pub(crate) fn scale_value<V: Encode + TypeInfo + 'static>(value: V) -> Value {
   let mut registry = Registry::new();
-  let id = registry.register_type(&MetaType::new::<V>()).id();
+  let id = registry.register_type(&MetaType::new::<V>()).id;
   let registry = PortableRegistry::from(registry);
   scale::decode_as_type(&mut value.encode().as_ref(), id, &registry).unwrap().remove_context()
 }