[gtkmm] Update to 4.20.0

ports/gtkmm/portfile.cmake

@@ -2,18 +2,16 @@ string(REGEX MATCH "^([0-9]*[.][0-9]*)" GTKMM_MAJOR_MINOR "${VERSION}")
 vcpkg_download_distfile(ARCHIVE
     URLS "https://ftp.gnome.org/pub/GNOME/sources/gtkmm/${GTKMM_MAJOR_MINOR}/gtkmm-${VERSION}.tar.xz"
     FILENAME "gtkmm-${VERSION}.tar.xz"
-    SHA512 94cf1f764e539b8b1fdff101f6e134c5e2bc9379f1dae3b6daef66ab94e90f5e70a41d8eb94842fd54c0f8706c565e975fa2adf6e4c6913cecaeb3c8cf00a1cd
+    SHA512 c65bfa6dc0788cdd698c25e3b29861cb47aa0cd9c8bd3632005958ecd5a8d92802fc8ecaf498bcfc281a9b4035e751eeb6c05fa351f4b14c063870218127dabd
 )
 
 vcpkg_extract_source_archive(
     SOURCE_PATH
-    ARCHIVE ${ARCHIVE}
-    PATCHES
-        gtk.patch
+    ARCHIVE "${ARCHIVE}"
 )
 
 vcpkg_configure_meson(
-    SOURCE_PATH ${SOURCE_PATH}
+    SOURCE_PATH "${SOURCE_PATH}"
     OPTIONS
         -Dmsvc14x-parallel-installable=false # Use separate DLL and LIB filenames for Visual Studio 2017 and 2019
         -Dbuild-tests=false

ports/gtkmm/vcpkg.json

@@ -1,7 +1,6 @@
 {
   "name": "gtkmm",
-  "version": "4.14.0",
-  "port-version": 1,
+  "version": "4.20.0",
   "description": "gtkmm is the official C++ interface for the popular GUI library GTK+.",
   "homepage": "https://www.gtkmm.org/",
   "license": "LGPL-3.0-or-later",

versions/baseline.json

@@ -3589,8 +3589,8 @@
       "port-version": 3
     },
     "gtkmm": {
-      "baseline": "4.14.0",
-      "port-version": 1
+      "baseline": "4.20.0",
+      "port-version": 0
     },
     "gtl": {
       "baseline": "1.2.0",

versions/g-/gtkmm.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "5ca079b1d25e02a1ebd0390c33d3003a3d8bd172",
+      "version": "4.20.0",
+      "port-version": 0
+    },
     {
       "git-tree": "2b05ebe5f3e9df8f79f113375600b813f247648b",
       "version": "4.14.0",