[gtk-mac-bundler] Update gtk3-demo bundler.

[John Ralls <jralls src gnome org>]

commit 3770bb6c27a913dc39dbcc98fe175a53df92700c
Author: John Ralls <jralls ceridwen us>
Date:   Sun Jun 28 16:25:44 2020 -0700

    Update gtk3-demo bundler.

 examples/Info-gtk-demo.plist | 14 +++++---------
 examples/gtk3-demo.bundle    |  4 ++++
 2 files changed, 9 insertions(+), 9 deletions(-)
---
diff --git a/examples/Info-gtk-demo.plist b/examples/Info-gtk-demo.plist
index 39dee0c..77b5383 100644
--- a/examples/Info-gtk-demo.plist
+++ b/examples/Info-gtk-demo.plist
@@ -7,9 +7,7 @@
     <key>CFBundleExecutable</key>
     <string>GtkDemo</string>
     <key>CFBundleGetInfoString</key>
-    <string>2.24.18, (C) 1997-2013 The GTK+ Team http://www.gtk.org</string>
-    <key>CFBundleIconFile</key>
-    <string>Giggle.icns</string>
+    <string>3.24.20, (C) 1997-2020 The GTK+ Team http://www.gtk.org</string>
     <key>CFBundleIdentifier</key>
     <string>org.gtk.demo</string>
     <key>CFBundleInfoDictionaryVersion</key>
@@ -17,17 +15,15 @@
     <key>CFBundlePackageType</key>
     <string>APPL</string>
     <key>CFBundleShortVersionString</key>
-    <string>2.24.18</string>
+    <string>3.24.20</string>
     <key>CFBundleSignature</key>
     <string>????</string>
     <key>CFBundleVersion</key>
-    <string>2.24.18</string>
+    <string>3.24.20</string>
     <key>NSHumanReadableCopyright</key>
-    <string>Copyright 1997 - 2013 The GTK+ Team, GNU General Public License.</string>
+    <string>Copyright 1997 - 2020 The GTK+ Team, GNU General Public License.</string>
     <key>LSMinimumSystemVersion</key>
-    <string>10.4</string>
-    <key>GtkOSXLaunchScriptFile</key>
-    <string>gtk_launcher.py</string>
+    <string>10.13</string>
     <key>NSHighResolutionCapable</key>
     <true/>
 </dict>
diff --git a/examples/gtk3-demo.bundle b/examples/gtk3-demo.bundle
index ec0eb4c..fab8ae0 100644
--- a/examples/gtk3-demo.bundle
+++ b/examples/gtk3-demo.bundle
@@ -69,6 +69,10 @@
     ${prefix}/lib/gdk-pixbuf-2.0/${pkg:gdk-pixbuf-2.0:gdk_pixbuf_binary_version}/loaders/*.so
   </binary>
 
+  <binary>
+    ${prefix}/lib/gio/modules/libgiognutls.so
+  </binary>
+
 <!-- No longer needed for pango >= 1.38
   <binary>
     ${prefix}/lib/pango/${pkg:pango:pango_module_version}/modules/