external: Update boost to 1.89.

- Adding compat of MSVC 2026.

CMakeLists.txt

@@ -128,7 +128,7 @@ option(VITA3K_FORCE_CUSTOM_BOOST "Force Vita3K build process to use the Boost ve
 option(VITA3K_FORCE_SYSTEM_BOOST "Force Vita3K build process to use the Boost version in the system and CMake's default paths and ignore the Boost version included with Vita3K" OFF)
 
 # Boost modules to be found by CMake
-set(BOOST_MODULES_TO_FIND filesystem system)
+set(BOOST_MODULES_TO_FIND filesystem)
 
 # If build process isn't set to forcefully use system Boost
 macro(get_boost)

CMakePresets.json

@@ -29,6 +29,14 @@
         "rhs": "Windows"
       }
     },
+    {
+      "name": "windows-vs2026",
+      "inherits": "windows",
+      "displayName": "Windows with Visual Studio 2026",
+      "description": "Windows native build using Visual Studio 2026 generator and default toolchain/compiler",
+      "generator": "Visual Studio 18 2026",
+      "architecture": "x64"
+    },
     {
       "name": "windows-vs2022",
       "inherits": "windows",
@@ -142,6 +150,27 @@
     }
   ],
   "buildPresets": [
+      {
+      "name": "windows-vs2026-debug",
+      "displayName": "Debug",
+      "description": "Build with debugging information and no compiler optimizations",
+      "configuration": "Debug",
+      "configurePreset": "windows-vs2026"
+    },
+    {
+      "name": "windows-vs2026-relwithdebinfo",
+      "displayName": "Release with debugging information",
+      "description": "Build with compiler optimizations enabled and limited debugging information",
+      "configuration": "RelWithDebInfo",
+      "configurePreset": "windows-vs2026"
+    },
+    {
+      "name": "windows-vs2026-release",
+      "displayName": "Release",
+      "description": "Build with compiler optimizations enabled and no debugging information",
+      "configuration": "Release",
+      "configurePreset": "windows-vs2026"
+    },
     {
       "name": "windows-vs2022-debug",
       "displayName": "Debug",