[gtkmm] Visual Studio builds: Update glibmm ABI version

[Chun-wei Fan <fanchunwei src gnome org>]

commit 8c0dd90b0e9a387bca63a8253a723c324452dd26
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Fri Apr 7 11:02:13 2017 +0800

    Visual Studio builds: Update glibmm ABI version
    
    The glibmm ABI version was updated in its unstable development series,
    so we ought to reflect that here as well in our projects, as we await
    for GTK+-4.0.

 MSVC_Net2017/gtkmm-version-paths.props |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/MSVC_Net2017/gtkmm-version-paths.props b/MSVC_Net2017/gtkmm-version-paths.props
index 22b49c2..e9199a7 100644
--- a/MSVC_Net2017/gtkmm-version-paths.props
+++ b/MSVC_Net2017/gtkmm-version-paths.props
@@ -11,7 +11,7 @@
     <DebugDllSuffix>-vc$(VSVer)0-d-$(ApiMajorVersion)_$(ApiMinorVersion)</DebugDllSuffix>
     <SigCMajorVersion>3</SigCMajorVersion>
     <GLibMMMajorVersion>2</GLibMMMajorVersion>
-    <GLibMMMinorVersion>52</GLibMMMinorVersion>
+    <GLibMMMinorVersion>54</GLibMMMinorVersion>
     <PangoMMMajorVersion>2</PangoMMMajorVersion>
     <PangoMMMinorVersion>42</PangoMMMinorVersion>
     <AtkMMMajorVersion>2</AtkMMMajorVersion>
@@ -75,4 +75,4 @@
       <Value>$(CairoMMMinorVersion)</Value>
     </BuildMacro>
   </ItemGroup>
-</Project>
\ No newline at end of file
+</Project>