Update Zig to 0.8.1

Author: jedisct1

azure-pipelines.yml

@@ -16,7 +16,7 @@ jobs:
           curl https://get.wasmer.io -sSfL | sh
         displayName: Install wasmer
       - script: |
-          curl -sL -o - https://ziglang.org/download/0.8.0/zig-linux-x86_64-0.8.0.tar.xz | tar xJ -f - -C /opt/
+          curl -sL -o - https://ziglang.org/download/0.8.1/zig-linux-x86_64-0.8.1.tar.xz | tar xJ -f - -C /opt/
           sudo mv /opt/zig-* /opt/zig
           env PATH=/opt/zig/bin:/opt/zig:$PATH
         displayName: Install the Zig SDK