chore(deps): update actions-rust-lang/setup-rust-toolchain action to v2

.github/workflows/build.yml

@@ -20,7 +20,7 @@ jobs:
     - name: Install Mold
       run: sudo apt install mold
     - name: Install Rust toolchain
-      uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1
+      uses: actions-rust-lang/setup-rust-toolchain@ecabd13d1c56bd1345c230e542e9144811ad706f # v2
     
     - name: Build
       run: cargo build --verbose