Update bad.txt again

Author: MichaReiser

crates/ty_python_semantic/resources/primer/bad.txt

@@ -14,7 +14,7 @@ pandas  # slow
 pandas-stubs 
 pandera  # stack overflow
 pip  # vendors packaging, see above
-prefect
+prefect # slow (12s)
 pylint  # cycle panics (self-recursive type alias)
 pyodide  # too many cycle iterations
 pywin32  # bad use-def map (binding with definitely-visible unbound)