Rebuild SeaBIOS in CI

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>

Author: FlyGoat

.github/workflows/build.yml

@@ -14,6 +14,9 @@ jobs:
         submodules: true
     - name: Install distro deps
       run: sudo apt-get install -y build-essential nasm
+    - name: Rebuild SeaBIOS
+      run: |
+        make seabios
     - name: make x86_64
       run: |
         make ARCH=x86_64