Adding environment setup steps to on_pull_request pipeline

.github/workflows/on_pull_request.yml

@@ -3,12 +3,25 @@ on:
   pull_request:
     branches:
       - develop
+  workflow_dispatch:
+
 jobs:
   on_pull_request:
     runs-on: macos-14
     steps:
       - uses: actions/checkout@v4
 
+      - name: Set up Ruby environment
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.0
+
+      - name: Install bundler
+        run: gem install bundler
+
+      - name: Install dependencies
+        run: bundle install
+
       - name: Run Unit and UI tests
         uses: ./.github/workflows/actions/run_lane
         with: