chore: update Wes and Phillip affiliations (#802)

Author: ianmcook

_data/committers.yml

@@ -198,7 +198,7 @@
 - name: Phillip Cloud
   role: PMC
   alias: cpcloud
-  affiliation: NVIDIA
+  affiliation: Kenn Software
 - name: Philipp Moritz
   role: PMC
   alias: pcmoritz
@@ -258,7 +258,7 @@
 - name: Wes McKinney
   role: PMC
   alias: wesm
-  affiliation: Posit
+  affiliation: Kenn Software
 - name: Weston Pace
   role: PMC
   alias: westonpace