Bump forgotten version for 5.8.0 release

Author: fredericDelaporte

NHibernate.Caches.props

@@ -1,7 +1,7 @@
 <Project>
   <PropertyGroup>
     <VersionMajor Condition="'$(VersionMajor)' == ''">5</VersionMajor>
-    <VersionMinor Condition="'$(VersionMinor)' == ''">7</VersionMinor>
+    <VersionMinor Condition="'$(VersionMinor)' == ''">8</VersionMinor>
     <VersionPatch Condition="'$(VersionPatch)' == ''">0</VersionPatch>
     <VersionSuffix Condition="'$(VersionSuffix)' == ''"></VersionSuffix>