ci: add riscv32im-risc0-zkvm-elf

Author: MarcosNicolau

.github/workflows/build-and-test-rust.yml

@@ -38,6 +38,7 @@ jobs:
          /home/runner/.risc0/bin/rzup install
          /home/runner/.risc0/bin/rzup install cargo-risczero 2.0.1
          /home/runner/.risc0/bin/rzup default cargo-risczero 2.0.1
+         rustup target add riscv32im-risc0-zkvm-elf
 
       - name: Cache Rust dependencies
         uses: actions/cache@v3
@@ -104,6 +105,7 @@ jobs:
          /home/runner/.risc0/bin/rzup install
          /home/runner/.risc0/bin/rzup install cargo-risczero 2.0.1
          /home/runner/.risc0/bin/rzup default cargo-risczero 2.0.1
+         rustup target add riscv32im-risc0-zkvm-elf
 
       - name: Cache Rust dependencies
         uses: actions/cache@v3