[gnome-bootstrap-theme] chore: add myself of co-maintainer

[Guillaume Bernard <gbernard src gnome org>]

commit 8cddb763c2ae3237586500ffe10e8d34a216a37b
Author: Guillaume Bernard <associations guillaume-bernard fr>
Date:   Fri Sep 23 14:25:30 2022 +0200

    chore: add myself of co-maintainer

 gnome-bootstrap-theme.doap | 6 ++++++
 1 file changed, 6 insertions(+)
---
diff --git a/gnome-bootstrap-theme.doap b/gnome-bootstrap-theme.doap
index 65e63f2..0c32c55 100644
--- a/gnome-bootstrap-theme.doap
+++ b/gnome-bootstrap-theme.doap
@@ -19,5 +19,11 @@
       <foaf:mbox rdf:resource="mailto:tomtryf gnome org" />
       <gnome:userid>tomtryf</gnome:userid>
     </foaf:Person>
+
+    <foaf:Person>
+      <foaf:name>Guillaume Bernard</foaf:name>
+      <foaf:mbox rdf:resource="mailto:associations guillaume-bernard fr" />
+      <gnome:userid>gbernard</gnome:userid>
+    </foaf:Person>
   </maintainer>
 </Project>