Update pull_request.yml to disable self-hosted builds temporarily

Author: finagolfin

.github/workflows/pull_request.yml

@@ -28,14 +28,14 @@ jobs:
        fail-fast: false
        matrix:
          include:
-           - swift-version: 'swift-6.2-branch'
-             build-type: 'docker'
-             build-compiler: '1'
-             runner: 'self-hosted'
-           - swift-version: 'development'
-             build-type: 'docker'
-             build-compiler: '1'
-             runner: 'self-hosted'
+           #- swift-version: 'swift-6.2-branch'
+           #  build-type: 'docker'
+           #  build-compiler: '1'
+           #  runner: 'self-hosted'
+           #- swift-version: 'development'
+           #  build-type: 'docker'
+           #  build-compiler: '1'
+           #  runner: 'self-hosted'
            - swift-version: 'swift-6.2-branch'
              build-type: 'docker'
              build-compiler: '0'