ci: update ubuntu ci

Author: axetroy

.github/workflows/ci.yml

@@ -79,6 +79,7 @@ jobs:
         if: startsWith(matrix.os, 'ubuntu')
         run: |
           # for build aarch64-unknown-linux-musl
+          sudo apt-get update
           sudo apt-get -y install gcc-x86-64-linux-gnu gcc-aarch64-linux-gnu gcc-mips-linux-gnu gcc-mips64-linux-gnuabi64 gcc-mips64el-linux-gnuabi64
 
           rustup target add x86_64-unknown-linux-musl