Bump standards version to 4.5.0.

debian/changelog

@@ -2,6 +2,7 @@ dulwich (0.20.6-1) UNRELEASED; urgency=medium
 
   * New upstream release.
    + Fixes broken branch removal test. Closes: #956876
+  * Bump standards version to 4.5.0.
 
  -- Jelmer Vernooij <jelmer@debian.org>  Sat, 29 Aug 2020 22:07:27 +0000
 

debian/control

@@ -12,7 +12,7 @@ Build-Depends: debhelper-compat (= 12),
                python3-certifi,
                python3-fastimport,
                python3-urllib3 (>= 1.24.1)
-Standards-Version: 4.2.1
+Standards-Version: 4.5.0
 Vcs-Git: https://salsa.debian.org/python-team/modules/dulwich.git
 Vcs-Browser: https://salsa.debian.org/python-team/modules/dulwich
 Rules-Requires-Root: no