avoid precompiling trailing task warning

[IanButterworth]

Fixes

Precompiling all packages...
  1 dependency successfully precompiled in 5 seconds. 121 already precompiled.
  1 dependency had output during precompilation:
┌ ProfileView
│  [pid 58932] waiting for IO to finish:
│   Handle type        uv_handle_t->data
│   timer              0x60000176cc80->0x111a9e110
│  This means that a package has started a background task or event source that has not finished running. For precompilation to complete successfully, the event source needs to be closed explicitly. See the developer documentation on fixing precompilation hangs for more help.
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