ci: macOS: try harder to have macOS 10.13 as the minver for qt5 x64.

Author: adriweb

gui/qt/CMakePresets.json

@@ -166,7 +166,13 @@
     },
     {
       "name": "Mac-x64-Qt5",
-      "inherits": [ "Mac-x64-Qt6", "Qt5" ]
+      "inherits": [ "Mac-x64-Qt6", "Qt5" ],
+      "cacheVariables": {
+        "VCPKG_TARGET_TRIPLET": {
+          "type": "STRING",
+          "value": "x64-osx-minver"
+        }
+      }
     },
     {
       "name": "Mac-arm64-Qt5",

gui/qt/triplets/x64-osx-minver.cmake

@@ -0,0 +1,9 @@
+set(VCPKG_BUILD_TYPE release)
+set(VCPKG_TARGET_ARCHITECTURE x64)
+set(VCPKG_CRT_LINKAGE dynamic)
+set(VCPKG_LIBRARY_LINKAGE static)
+set(VCPKG_CMAKE_SYSTEM_NAME Darwin)
+set(VCPKG_OSX_ARCHITECTURES x86_64)
+set(VCPKG_OSX_DEPLOYMENT_TARGET 10.13)
+set(VCPKG_C_FLAGS -mmacosx-version-min=10.13)
+set(VCPKG_CXX_FLAGS -mmacosx-version-min=10.13)