Add branch rules for gcompris

branch-rules.yml

@@ -16,6 +16,7 @@
   'pim/*': 'master'
   'libraries/kweathercore': 'master'
   'graphics/libksane': 'master'
+  'education/gcompris': 'master'
 
 '@stable':
   'frameworks/*': 'master' # 'v5.85.0'
@@ -34,3 +35,4 @@
   'pim/kitinerary': 'master' # release/21.08
   'libraries/kweathercore': 'v0.5'
   'graphics/libksane': 'master' # release/21.08
+  'education/gcompris': 'KDE/2.0'