[LyX/master] Cmake build: Adapt for branch 2.4

[Kornel Benko]

commit b8b9e8ec1402341229aade4b4a975b54c3ef80c9
Author: Kornel Benko <kornel at lyx.org>
Date:   Tue Apr 2 10:46:20 2024 +0200

    Cmake build: Adapt for branch 2.4
---
 CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 86226dc8e8..f473ee4bc5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -664,9 +664,9 @@ set(min_qt5_version "5.6")
 if(LYX_USE_QT MATCHES "AUTO")
 	# try qt6 first
 	find_package(Qt6Core CONFIG QUIET)
-	if (Qt6Core_Found)
+	if (Qt6Core_FOUND)
 		set(LYX_USE_QT "QT6" CACHE STRING "Valid qt version" FORCE)
-		message(STATUS "Qt5Core_VERSION = ${Qt5Core_VERSION}")
+		message(STATUS "Qt6Core_VERSION = ${Qt6Core_VERSION}")
 	else()
 		find_package(Qt5Core CONFIG QUIET)
 		if(Qt5Core_FOUND)