Extend self-hosted timeout

Author: finagolfin

.github/workflows/pull_request.yml

@@ -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' }}