Update default worker_ttl to 2 minutes

4 jobs for dead-workers in 16 minutes and 13 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #242736
docker
build_linux_37

00:12:57

passed #242737
docker
build_linux_38

00:11:36

passed #242734
intel macos
build_macos_intel_37

00:16:10

passed #242735
intel macos
build_macos_intel_38

00:13:46