Update CI runner config

Author: marcprux

.github/workflows/pull_request.yml

@@ -27,30 +27,21 @@ jobs:
      strategy:
        fail-fast: false
        matrix:
-         #build-type: ['docker']
-         build-type: ['docker']
-         #build-compiler: ['0', '1']
-         build-compiler: ['1']
-         # blank arch builds all (aarch64,x86_64,armv7)
-         arch: ['']
-         # builds only x86_64 to speed up the validation
-         #arch: ['x86_64']
-         # build both the quick (x86_64) and complete (aarch64,x86_64,armv7) SDKs
-         #arch: ['x86_64', '']
-         swift-version: ['swift-6.2-branch', 'development']
-         runner: ['ubuntu-24.04']
          include:
-           # self-hosted runner variant
            - swift-version: 'development'
              build-type: 'docker'
+             arch: ''
              build-compiler: '1'
+             # self-hosted runner variant
              runner: 'skip-android-runner'
            - swift-version: 'swift-6.2-branch'
              build-type: 'local'
              build-compiler: '0'
+             runner: 'ubuntu-24.04'
            - swift-version: 'development'
              build-type: 'local'
              build-compiler: '0'
+             runner: 'ubuntu-24.04'
 
      runs-on: ${{ matrix.runner }}
      steps: