build: use mlugg/setup-zig@v2 for github workflow

Author: godsarmy

.github/workflows/zig.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
-      - uses: mlugg/setup-zig@v1
+      - uses: mlugg/setup-zig@v2
         name: Set up zig
         with:
           version: 0.15.1