ci: Handle log files regardless of CMake's version

ci/test/GetCMakeLogFiles.cmake

@@ -0,0 +1,11 @@
+# Copyright (c) 2024-present The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit/.
+
+if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.26)
+  set(log_files "CMakeFiles/CMakeConfigureLog.yaml")
+else()
+  set(log_files "CMakeFiles/CMakeOutput.log CMakeFiles/CMakeError.log")
+endif()
+
+execute_process(COMMAND ${CMAKE_COMMAND} -E echo ${log_files})