Update version number

Author: afichet

deploy/linux/openexr-viewer.desktop

@@ -1,6 +1,6 @@
 [Desktop Entry]
 Type=Application
-Version=0.4.1
+Version=0.6.0
 Name=OpenEXR Viewer
 Comment=Viewer for OpenEXR images
 Icon=openexr-viewer

deploy/linux/openexr-viewer.metainfo.xml

@@ -11,6 +11,7 @@
   </description>
   <launchable type="desktop-id">openexr-viewer.desktop</launchable>
   <releases>
+    <release date="2023-05-40" version="0.6.0" />
     <release date="2022-04-04" version="0.5.2"/>
     <release date="2021-09-11" version="0.5.1"/>
     <release date="2021-09-10" version="0.5.0"/>