move libatomic1 first

.github/workflows/build.yml

@@ -13,12 +13,12 @@ jobs:
   build-server:
     runs-on: ubuntu-latest
     steps:
+      - run: sudo apt-get install -y libatomic1
       - name: install elan
         run: |
           set -o pipefail
           curl -sSfL https://github.com/leanprover/elan/releases/download/v1.4.2/elan-x86_64-unknown-linux-gnu.tar.gz | tar xz
           ./elan-init -y --default-toolchain none
           echo "$HOME/.elan/bin" >> $GITHUB_PATH
-      - run: sudo apt-get install -y libatomic1
       - uses: actions/checkout@v3
       - run: npm run build_server