Enable self-hosted 6.2 build and extend self-hosted timeout

Author: finagolfin

.github/workflows/pull_request.yml

@@ -28,10 +28,10 @@ jobs:
        fail-fast: false
        matrix:
          include:
-           #- swift-version: 'swift-6.2-branch'
-           #  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'
@@ -45,8 +45,8 @@ jobs:
              build-compiler: '0'
              runner: 'ubuntu-24.04'
      runs-on: ${{ matrix.runner }}
-     # 15 hour timeout
-     timeout-minutes: 900
+     # 18 hour timeout
+     timeout-minutes: 1080
      steps:
       - name: Free Disk Space
         if: ${{ matrix.runner != 'self-hosted' }}