Replace **mise-action** with **ruby/setup-ruby**, which uses precompiled binaries and is faster than building from source.

Author: dogo

.github/workflows/Build.yml

@@ -14,10 +14,11 @@ jobs:
         with:
           xcode-version: 26.1
 
-      - name: Install Project Tools
-        uses: jdx/mise-action@v3
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
         with:
-          experimental: true
+          ruby-version: 3.1.2
+          bundler-cache: true
 
       - name: Building iOS app
         run: exec ./.github/scripts/build_app.sh