add target

Author: pgherveou

.github/workflows/ci.yml

@@ -21,6 +21,7 @@ jobs:
         with:
           toolchain: ${{ matrix.rust }}
           components: rustfmt, clippy, rust-src
+          targets: riscv64imac-unknown-none-elf
       - name: Install solc
         run: |
           SOLC_VERSION=0.8.26