[expat] update to 2.7.3 (#47506)

ports/expat/portfile.cmake

@@ -4,7 +4,7 @@ vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO libexpat/libexpat
     REF "${REF}"
-    SHA512 18d978a52f5ab9f5b0f8f0059a71c96d35708e437d763d356cde1babc6d4d08297f2b443d420b3906a51a7559fe4a84bc49bd51d4b9a6e1ee24c5d12b8c42707
+    SHA512 34400f7dff0151a38c5ff7d73b65b57c7fdf648cf407ed94beddf2d11511b650c4ea16e417a15ebe1707456e7279210e929cc97a0caf7a1ff45bf1d07275e815
     HEAD_REF master
 )
 

ports/expat/vcpkg.json

@@ -1,6 +1,6 @@
 {
   "name": "expat",
-  "version": "2.7.2",
+  "version": "2.7.3",
   "description": "XML parser library written in C",
   "homepage": "https://github.com/libexpat/libexpat",
   "license": "MIT",

versions/baseline.json

@@ -2761,7 +2761,7 @@
       "port-version": 0
     },
     "expat": {
-      "baseline": "2.7.2",
+      "baseline": "2.7.3",
       "port-version": 0
     },
     "expected-lite": {

versions/e-/expat.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "1f334673a6e31a6887fa5377a330e436b4f1f6a7",
+      "version": "2.7.3",
+      "port-version": 0
+    },
     {
       "git-tree": "a1969f020361e85beab3071be085e6b13bf19786",
       "version": "2.7.2",