Add data option notification to news

NEWS.md

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 # psm3mkv 0.3.2 (7 June 2024)
 
 - Revised calculations of constrained restricted mean durations in internal function `calc_drmd()` and the accompanying `vignette("background-mortality")`.
+- Add new data option: `create_dummydata("pharmaonc")` provides a dataset based on `pharmaverseadam::adsl()` and `pharmaverseadam::adrs_onco()`. This requires a dependency to `admiral` and `pharmaverseadam` packages.
 - Provide a convenience function, `compare_psm_likes()`, to compare the total log-likelihood values for the patient-level dataset after fitting PSM-simple and PSM-complex models to each combination of endpoint distributions.
 - Add citation to publication in *Applied Health Economics and Health Policy*, [DOI: 10.1007/s40258-024-00884-2 ](https://doi.org/10.1007/s40258-024-00884-2).
 - Updated license statements to 2024