Bump version for release.

NEWS

@@ -1,4 +1,4 @@
-1.5.5.dev0
+1.5.5
  * #314: Fix regression in support for PostgreSQL's "directory" dump format. Unlike other dump
    formats, the "directory" dump format does not stream directly to/from Borg.
  * #315: Fix enabled database hooks to implicitly set one_file_system configuration option to true.

setup.py

@@ -1,6 +1,6 @@
 from setuptools import find_packages, setup
 
-VERSION = '1.5.5.dev0'
+VERSION = '1.5.5'
 
 
 setup(