update to ubuntu22.04

Author: CppCXY

.github/workflows/build.yml

@@ -15,7 +15,7 @@ jobs:
       matrix:
         include:
           - { os: ubuntu-20.04, target: linux, platform: linux-x64 }
-          - { os: ubuntu-20.04, target: linux, platform: linux-aarch64 }
+          - { os: ubuntu-22.04, target: linux, platform: linux-aarch64 }
           - { os: macos-latest, target: darwin, platform: darwin-x64 }
           - { os: macos-latest, target: darwin, platform: darwin-arm64 }
           - { os: windows-latest, target: windows, platform: win32-x64 }