Change 6.2 to perform local build on ubuntu-24.04

Author: marcprux

.github/workflows/pull_request.yml

@@ -30,6 +30,7 @@ jobs:
          include:
            - swift-version: '6.2'
              build-type: 'local'
+             runner: 'ubuntu-24.04'
            #- swift-version: 'tag:swift-6.2-RELEASE'
            #- swift-version: 'tag:swift-DEVELOPMENT-SNAPSHOT-2025-09-14-a'
            #- swift-version: 'tag:swift-6.2-DEVELOPMENT-SNAPSHOT-2025-09-10-a'