Updated to zope.app.form 3.8.0 to reduce some transitive zope.app dependencies

doc/CHANGES.rst

@@ -27,6 +27,7 @@ Features Added
   * zope.app.appsetup 3.11
   * zope.app.component 3.8.2
   * zope.app.container 3.8.0
+  * zope.app.form 3.8.0
   * zope.app.http 3.6.0
   * zope.app.interface 3.5.0
   * zope.app.pagetemplate 3.6.0

versions.cfg

@@ -46,7 +46,7 @@ zope.app.error = 3.5.2
 zope.app.exception = 3.5.0
 zope.app.file = 3.5.0
 zope.app.folder = 3.5.1
-zope.app.form = 3.7.3
+zope.app.form = 3.8.0
 zope.app.generations = 3.5.0
 zope.app.http = 3.6.0
 zope.app.i18n = 3.6.0