Use bugfix branches for plone.namedfile and plone.formwidget.namedfile.

See plone/plone.namedfile#159 (comment)

sources.cfg

@@ -91,15 +91,15 @@ plone.contentrules                  = git ${remotes:plone}/plone.contentrules.gi
 plone.dexterity                     = git ${remotes:plone}/plone.dexterity.git pushurl=${remotes:plone_push}/plone.dexterity.git branch=2.10.x
 plone.event                         = git ${remotes:plone}/plone.event.git pushurl=${remotes:plone_push}/plone.event.git branch=1.x
 plone.folder                        = git ${remotes:plone}/plone.folder.git pushurl=${remotes:plone_push}/plone.folder.git branch=3.x
-plone.formwidget.namedfile          = git ${remotes:plone}/plone.formwidget.namedfile.git pushurl=${remotes:plone_push}/plone.formwidget.namedfile.git branch=2.x
+plone.formwidget.namedfile          = git ${remotes:plone}/plone.formwidget.namedfile.git pushurl=${remotes:plone_push}/plone.formwidget.namedfile.git branch=2.1.x
 plone.formwidget.recurrence         = git ${remotes:plone}/plone.formwidget.recurrence.git pushurl=${remotes:plone_push}/plone.formwidget.recurrence.git branch=2.1.x
 plone.i18n                          = git ${remotes:plone}/plone.i18n.git pushurl=${remotes:plone_push}/plone.i18n.git branch=4.x
 plone.indexer                       = git ${remotes:plone}/plone.indexer.git pushurl=${remotes:plone_push}/plone.indexer.git branch=1.x
 plone.intelligenttext               = git ${remotes:plone}/plone.intelligenttext.git pushurl=${remotes:plone_push}/plone.intelligenttext.git branch=3.x
 plone.keyring                       = git ${remotes:plone}/plone.keyring.git pushurl=${remotes:plone_push}/plone.keyring.git branch=3.x
 plone.locking                       = git ${remotes:plone}/plone.locking.git pushurl=${remotes:plone_push}/plone.locking.git branch=2.3.x
 plone.memoize                       = git ${remotes:plone}/plone.memoize.git pushurl=${remotes:plone_push}/plone.memoize.git branch=3.x
-plone.namedfile                     = git ${remotes:plone}/plone.namedfile.git pushurl=${remotes:plone_push}/plone.namedfile.git branch=5.x
+plone.namedfile                     = git ${remotes:plone}/plone.namedfile.git pushurl=${remotes:plone_push}/plone.namedfile.git branch=5.6.x
 plone.outputfilters                 = git ${remotes:plone}/plone.outputfilters.git pushurl=${remotes:plone_push}/plone.outputfilters.git branch=4.x
 plone.portlet.collection            = git ${remotes:plone}/plone.portlet.collection.git pushurl=${remotes:plone_push}/plone.portlet.collection.git branch=3.3.x
 plone.portlet.static                = git ${remotes:plone}/plone.portlet.static.git pushurl=${remotes:plone_push}/plone.portlet.static.git branch=3.1.x