fix

.github/workflows/build.yml

@@ -30,7 +30,7 @@ jobs:
         run: |
           #! /bin/bash
           dpkg -l libstdc++6
-          apt install libstdc++6=12.3.0-1ubuntu1~22.04 -y --allow-downgrades
+          sudo apt install libstdc++6=12.3.0-1ubuntu1~22.04 -y --allow-downgrades
       - run: |
           #! /bin/bash
           LIBCPP_VERSION="$(dpkg -s libstdc++6 | grep Version | awk '{match($0,"[0-9]+.[0-9].[0-9]",a)}END{print a[0]}')" # yamllint disable-line rule:line-length