Simplify Ruby job configuration in workflow

Removed Ruby version matrix and simplified job name.

Author: pusewicz

.github/workflows/main.yml

@@ -15,14 +15,7 @@ permissions:
 jobs:
   build:
     runs-on: ubuntu-latest
-    name: Ruby ${{ matrix.ruby }}
-    strategy:
-      matrix:
-        ruby:
-          - "3.3.10"
-          - "3.4.8"
-          - "4.0.1"
-
+    name: Ruby
     steps:
       - name: Update apt and Install sdl
         run: |
@@ -32,7 +25,6 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: ${{ matrix.ruby }}
           bundler-cache: true
       - name: Run the default task
         run: bundle exec rake