add blob check

.github/workflows/ci.yaml

@@ -38,6 +38,8 @@ jobs:
         run: TARGET=riscv64imac-unknown-none-elf cargo check
       - name: Run CI script for riscv64gc-unknown-none-elf under ${{ matrix.rust }}
         run: TARGET=riscv64gc-unknown-none-elf cargo check
+      - name: Check blobs
+        run: ./check-blobs.sh
 
   # On macOS and Windows, we at least make sure that all examples build and link.
   build-other: