Update CI.yml

Author: VirxEC

.github/workflows/CI.yml

@@ -57,8 +57,10 @@ jobs:
       - uses: actions/setup-python@v5
         with:
           python-version: '3.10'
-      - name: Install rust-src
-        run: rustup component add rust-src --toolchain nightly
+      - name: Install Rust nightly
+        run: |
+          rustup toolchain install nightly
+          rustup component add rust-src --toolchain nightly
       - name: Build wheels
         uses: PyO3/maturin-action@v1
         with: