gh actions: switch to goto-bus-stop/setup-zig@v2

.github/workflows/gen_bindings.yml

@@ -99,7 +99,7 @@ jobs:
       - uses: actions/checkout@v3
         with:
           repository: floooh/sokol-zig
-      - uses: goto-bus-stop/setup-zig@v1
+      - uses: goto-bus-stop/setup-zig@v2
         with:
           version: 0.11.0-dev.4004+a57608217
       - uses: actions/download-artifact@v3