Update versions for 2.3.1

CITATION.cff

@@ -22,7 +22,7 @@ authors:
     given-names: Rachel
 title: "Mantid Imaging"
 abstract: "Mantid Imaging is a graphical toolkit for performing 3D reconstruction of neutron tomography data.  It provides an easy-to-use graphical interface to a wide range of pre/post-processing operations, tilt correction and reconstruction algorithms, accommodating for tomography users with varying data complexity and image analysis background knowledge. It utilises a flexible plugin system that allows easy integration of external software, and has allowed us to re-use software widely known in the neutron tomography community."
-version: "2.3.0"
+version: "2.3.1"
 doi: 10.5281/zenodo.4728059
 date-released: 2022-02-25
 license: "GPL-3.0-or-later"

docs/conf.py

@@ -76,7 +76,7 @@
 # The short X.Y version.
 version = u'2.3'
 # The full version, including alpha/beta/rc tags.
-release = u'2.3.0'
+release = u'2.3.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

mantidimaging/__init__.py

@@ -1,7 +1,7 @@
 # Copyright (C) 2022 ISIS Rutherford Appleton Laboratory UKRI
 # SPDX - License - Identifier: GPL-3.0-or-later
 
-__version__ = '2.3.0'
+__version__ = '2.3.1'
 """
 The gui package is not imported here, because it will pull in all of PyQt
 packages, which we do not want when using only the CLI. This is both a speedup

setup.py

@@ -215,7 +215,7 @@ def run(self):
 
 setup(
     name="mantidimaging",
-    version="2.3.0",
+    version="2.3.1",
     packages=find_packages(),
     package_data={
         "mantidimaging.gui": ["ui/*.ui", "ui/images/*.png", "windows/wizard/*.yml"],