[libkml] explicitly set C++ standard as it uses removed features (#30526)

* [libkml] explicitly set C++ standard as it uses features that were removed in C++17

* ./vcpkg x-add-version --all

ports/libkml/portfile.cmake

@@ -28,6 +28,9 @@ vcpkg_cmake_configure(
     SOURCE_PATH "${SOURCE_PATH}"
     OPTIONS
         -DCMAKE_POLICY_DEFAULT_CMP0022=NEW
+        # libkml uses std::unary_function that was deprecated in C++11 and removed in C++17
+        # compilers are starting to ship C++17 as the defualt so explicitly set C++11
+        -DCMAKE_CXX_STANDARD=11
 )
 
 vcpkg_cmake_install()

ports/libkml/vcpkg.json

@@ -1,7 +1,7 @@
 {
   "name": "libkml",
   "version": "1.3.0",
-  "port-version": 11,
+  "port-version": 12,
   "description": "Reference implementation of OGC KML 2.2",
   "homepage": "https://github.com/libkml/libkml",
   "license": "BSD-3-Clause",

versions/baseline.json

@@ -4106,7 +4106,7 @@
     },
     "libkml": {
       "baseline": "1.3.0",
-      "port-version": 11
+      "port-version": 12
     },
     "liblas": {
       "baseline": "1.8.1",

versions/l-/libkml.json

@@ -1,5 +1,10 @@
 {
   "versions": [
+    {
+      "git-tree": "84ea1bd884a5d5afee127b15e73ef5bb7ba638dc",
+      "version": "1.3.0",
+      "port-version": 12
+    },
     {
       "git-tree": "4969a3e81df3ef13b5e3f2f94e652311df8bbafe",
       "version": "1.3.0",