add toolchain component for cargo fmt

Author: hnlearndev

.github/workflows/ci-cd.yaml

@@ -22,6 +22,9 @@ jobs:
           components: rustfmt, clippy
           targets: wasm32-unknown-unknown
 
+      - name: Install rustfmt for nightly toolchain
+        run: rustup component add --toolchain nightly-x86_64-unknown-linux-gnu rustfmt
+
       - name: Check formatting
         run: cargo fmt --all -- --check