Bump Touch.Unit.

New commits in spouliot/Touch.Unit:

* spouliot/Touch.Unit@bfb04f4 Fix eol.
* spouliot/Touch.Unit@8258da0 [Touch.Client] Add a MacCatalyst version.

Diff: f8768d99ef..bfb04f4f69

external/Touch.Unit

@@ -1 +1 @@
-Subproject commit a94d56ee10d0e75ee36202df1c59e345179ab710
+Subproject commit 05db76923adb03b3bbca5b2a354a1bb531e4982d