Update project_options to v0.26.3

Author: StevenvdSchoot

CMakeLists.txt

@@ -28,7 +28,7 @@ endif()
 # Add project_options v0.20.0
 # https://github.com/cpp-best-practices/project_options
 include(FetchContent)
-FetchContent_Declare(_project_options URL https://github.com/aminya/project_options/archive/refs/tags/v0.20.0.zip)
+FetchContent_Declare(_project_options URL https://github.com/aminya/project_options/archive/refs/tags/v0.26.3.zip)
 FetchContent_MakeAvailable(_project_options)
 include(${_project_options_SOURCE_DIR}/Index.cmake)