Fixes https://github.com/llvm/llvm-project/issues/172893. In the issue reported above there, it appears that LLDB is hitting a 3s timeout as part of some CI tests; this patch attempts to fix the issue by replacing the 3s timeout with a 60s timeout, which should be suitably long for any CI job (lldb-dap itself will automatically time out after 30s, so this should not be hit unless the process hangs).