Some minor package upgrades to deal with zope.testing.doctest warnings

doc/CHANGES.rst

@@ -23,6 +23,9 @@ Features Added
   - RestrictedPython = 3.5.2
   - ThreadLock = 2.13.0
   - ZODB3 = 3.9.5
+  - zope.authentication = 3.7.1
+  - zope.browser = 1.3
+  - zope.cachedescriptors = 3.5.1
 
 Bugs Fixed
 ++++++++++

versions.cfg

@@ -85,10 +85,10 @@ zope.app.zapi = 3.4.1
 zope.app.zcmlfiles = 3.5.5
 zope.app.zopeappgenerations = 3.5.0
 zope.app.zptpage = 3.5.0
-zope.authentication = 3.7.0
+zope.authentication = 3.7.1
 zope.broken = 3.6.0
-zope.browser = 1.2
-zope.cachedescriptors = 3.5.0
+zope.browser = 1.3
+zope.cachedescriptors = 3.5.1
 zope.catalog = 3.8.1
 zope.component = 3.7.1
 zope.componentvocabulary = 1.0