[libxml2] update to 2.15.1 (#48199)

ports/libxml2/portfile.cmake

@@ -2,7 +2,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO GNOME/libxml2
     REF "v${VERSION}"
-    SHA512 c0ec62434379200615d5400345d1664f6b02af573d2e61ec343b463745fc9a7c74c7ff5d66023efdbabff81dc36e1d6c54921f619c81521c79e71611d5ed0268
+    SHA512 05d998e611a8b59cb6688d9432a0f8977cae94aa17b2f01a81c75333c4610b801d1b7e4d19e3206fb06eab4303a7046fc3cac9c814529c0757d61825ebb0aa4e
     HEAD_REF master
     PATCHES
         cxx-for-icu.diff

ports/libxml2/vcpkg.json

@@ -1,6 +1,6 @@
 {
   "name": "libxml2",
-  "version": "2.15.0",
+  "version": "2.15.1",
   "description": "Libxml2 is the XML C parser and toolkit developed for the Gnome project (but usable outside of the Gnome platform).",
   "homepage": "https://gitlab.gnome.org/GNOME/libxml2/-/wikis/home",
   "license": "MIT",

versions/baseline.json

@@ -5825,7 +5825,7 @@
       "port-version": 0
     },
     "libxml2": {
-      "baseline": "2.15.0",
+      "baseline": "2.15.1",
       "port-version": 0
     },
     "libxmlb": {

versions/l-/libxml2.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "d6e30bfd6499bdb381bc2ceee80a3d136927fbc7",
+      "version": "2.15.1",
+      "port-version": 0
+    },
     {
       "git-tree": "8d4f6f9936bc885f1acb93fde7584b6fbe32e150",
       "version": "2.15.0",