update dockpanelsuite to 3.1.0

Author: pandinocoder

Intersect.Editor/Intersect.Editor.csproj

@@ -69,8 +69,8 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="DockPanelSuite" Version="3.0.4" />
-    <PackageReference Include="DockPanelSuite.ThemeVS2015" Version="3.0.4" />
+    <PackageReference Include="DockPanelSuite" Version="3.1.0" />
+    <PackageReference Include="DockPanelSuite.ThemeVS2015" Version="3.1.0" />
     <PackageReference Include="Fody" Version="6.6.4">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>