civetweb: Fix build with CMake 4

mingw-w64-civetweb/PKGBUILD

@@ -4,7 +4,7 @@ _realname=civetweb
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 pkgver=1.16
-pkgrel=2
+pkgrel=3
 pkgdesc="Embedded C/C++ web server (mingw-w64)"
 arch=(any)
 mingw_arch=('mingw64' 'ucrt64' 'clang64' 'clangarm64')
@@ -36,6 +36,7 @@ build() {
         ${MINGW_PREFIX}/bin/cmake \
         -G "Ninja" \
         -DCMAKE_INSTALL_PREFIX=${MINGW_PREFIX} \
+        -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
         "${extra_config[@]}" \
         -DBUILD_SHARED_LIBS=YES \
         -DCIVETWEB_BUILD_TESTING=NO \