cicd: update mlugg/setup-zig and use Zig v0.14.1

Author: Ryoga-exe

.github/workflows/docs.yml

@@ -23,9 +23,9 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
       - name: Setup Zig
-        uses: mlugg/setup-zig@v1
+        uses: mlugg/setup-zig@v2
         with:
-          version: 0.14.0
+          version: 0.14.1
       - name: Build docs
         run: zig build docs
       - name: Upload artifact