CI: Use new version of setup-zig

Author: jayschwa

.github/workflows/ci.yaml

@@ -26,7 +26,7 @@ jobs:
           sudo apt-get install libgles-dev libpulse-dev libxext-dev
 
       - name: Setup Zig
-        uses: mlugg/setup-zig@v1
+        uses: mlugg/setup-zig@v2
         with:
           version: ${{ matrix.zig-version }}