Discord plugin update notifications occasionally feature the wrong author

[philpax]

This notification, corresponding to a plugin update by wompscode (#5294), was instead attributed to Populo, who submitted their own update (#5297) which was correctly attributed.

Looking at the code for XLWebServices, it appears that the author information is drawn from the PR number specified in the staged builds:
https://github.com/goatcorp/XLWebServices/blob/1f198735c47b361d477943a1a5c28e2526bc396a/XLWebServices/Controllers/PlogonController.cs#L244
https://github.com/goatcorp/XLWebServices/blob/1f198735c47b361d477943a1a5c28e2526bc396a/XLWebServices/Controllers/PlogonController.cs#L290

And that PR number appears to come from Plogon:

Plogon/Plogon/Program.cs

Line 437 in 9f1619a

PrNumber = committingPrNum.Value,

My hypothesis is that these builds are being staged with the number of the last PR to trigger a Plogon commit, which is not necessarily the same as each of the PRs that would be rolled into that commit - which would explain why the earlier update has the authorship of the later update.