deps(ci): use dtolnay/toolchain instead of installing rustup

.github/workflows/code_coverage.yml

@@ -16,12 +16,14 @@ jobs:
         uses: actions/checkout@v4
       - name: Install lcov tools
         run: sudo apt-get install lcov -y
-      - name: Install rustup
-        run: curl https://sh.rustup.rs -sSf | sh -s -- -y
-      - name: Set default toolchain
-        run: rustup default nightly
+      - name: Install Rust Toolchain
+        uses: dtolnay/rust-toolchain@v1
+        with:
+          toolchain: nightly
       - name: Set profile
         run: rustup set profile minimal
+      - name: Update toolchain
+        run: rustup update
       - name: Add llvm tools
         run: rustup component add llvm-tools-preview
       - name: Update toolchain