Update Jon Keane role to PMC (#419)

Per https://lists.apache.org/thread/9zt2l0ykvpznqpfdo4t4wh4v92dy55d9

---------

Co-authored-by: Nic Crane <thisisnic@gmail.com>
diff --git a/_data/committers.yml b/_data/committers.yml
index 5f93638..ba83b76 100644
--- a/_data/committers.yml
+++ b/_data/committers.yml
@@ -95,6 +95,10 @@
   role: PMC
   alias: jakevin
   affiliation: SelectDB
+- name: Jonathan Keane
+  role: PMC
+  alias: jonkeane
+  affiliation: Independent
 - name: Jorge Cardoso Leitao
   role: PMC
   alias: jorgecarleitao
@@ -308,10 +312,6 @@
   role: Committer
   alias: jiayuliu
   affiliation: Airbnb Inc.
-- name: Jonathan Keane
-  role: Committer
-  alias: jonkeane
-  affiliation: Independent
 - name: Kazuaki Ishizaki
   role: Committer
   alias: kiszk