Switch back to building 6.2 from a tag

Author: marcprux

.github/workflows/pull_request.yml

@@ -28,7 +28,8 @@ jobs:
        fail-fast: false
        matrix:
          include:
-           - swift-version: '6.2'
+           #- swift-version: '6.2'
+           - swift-version: 'tag:swift-6.2-RELEASE'
              build-type: 'local'
              runner: 'ubuntu-24.04'
            #- swift-version: 'tag:swift-6.2-RELEASE'