Merge pull request #4041 from planetarium/prepare/5.6.0

🔧 Prepare 5.6.0

Author: OnedgeLee

CHANGES.md

@@ -1,7 +1,7 @@
 Libplanet changelog
 ===================
 
-Version 5.5.2
+Version 5.6.0
 -------------
 
 To be released.

Directory.Build.props

@@ -4,7 +4,7 @@
     <TargetFrameworks Condition="'$(_IsPacking)'=='true'">net6.0</TargetFrameworks>
     <TargetFramework Condition="'$(_IsPacking)'!='true'">net6.0</TargetFramework>
     <LangVersion>10</LangVersion>
-    <VersionPrefix>5.5.2</VersionPrefix>
+    <VersionPrefix>5.6.0</VersionPrefix>
     <!-- Note: don't be confused by the word "prefix" here.  It's merely a
     version without suffix like "-dev.123".  See the following examples:
     Version: 1.2.3-dev.456