ci: fix rustup target installation

Author: Brooooooklyn

.github/workflows/release.yml

@@ -49,9 +49,18 @@ jobs:
         with:
           submodules: recursive
 
+      - name: Print rustup toolchain version
+        shell: bash
+        id: rustup-version
+        run: |
+          export RUST_TOOLCHAIN_VERSION="$(grep 'channel' rust-toolchain.toml | head -1 | awk -F '"' '{print $2}')"
+          echo "Rust toolchain version: $RUST_TOOLCHAIN_VERSION"
+          echo "RUST_TOOLCHAIN_VERSION=$RUST_TOOLCHAIN_VERSION" >> "$GITHUB_OUTPUT"
+
       - name: Install Rust
         uses: dtolnay/rust-toolchain@stable
         with:
+          toolchain: '${{ steps.rustup-version.outputs.RUST_TOOLCHAIN_VERSION }}'
           targets: ${{ matrix.target }}
 
       - name: Cache Rust