fix: ci

Author: dockfries

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
         with:
           submodules: "true"
       - name: install packages
-        run: sudo apt-get install g++-multilib cmake
+        run: sudo apt update && sudo apt-get install g++-multilib cmake
       - name: cmake
         run: mkdir build && cd build && cmake -DCMAKE_BUILD_TYPE=Release ..
       - name: make