Update architectures

Author: sharkdp

.github/workflows/CICD.yml

@@ -42,12 +42,12 @@ jobs:
         job:
           - { os: ubuntu-18.04, target: arm-unknown-linux-gnueabihf , use-cross: true }
           - { os: ubuntu-18.04, target: aarch64-unknown-linux-gnu   , use-cross: true }
-          - { os: ubuntu-18.04, target: i586-unknown-linux-gnu      , use-cross: true }
           - { os: ubuntu-18.04, target: i686-unknown-linux-gnu      , use-cross: true }
           - { os: ubuntu-18.04, target: i686-unknown-linux-musl     , use-cross: true }
           - { os: ubuntu-18.04, target: x86_64-unknown-linux-gnu    }
           - { os: ubuntu-18.04, target: x86_64-unknown-linux-musl   , use-cross: true }
           - { os: macos-10.15 , target: x86_64-apple-darwin         }
+          # - { os: windows-2019, target: i686-pc-windows-gnu         }  ## disabled; error: linker `i686-w64-mingw32-gcc` not found
           - { os: windows-2019, target: i686-pc-windows-msvc        }
           - { os: windows-2019, target: x86_64-pc-windows-gnu       }
           - { os: windows-2019, target: x86_64-pc-windows-msvc      }