[utils] KeyframeSelection: Update software version

Following the addition of the SfMData files as outputs in the command line,
the version needs to be updated.

src/software/utils/main_keyframeSelection.cpp

@@ -18,7 +18,7 @@
 
 // These constants define the current software version.
 // They must be updated when the command line is changed.
-#define ALICEVISION_SOFTWARE_VERSION_MAJOR 3
+#define ALICEVISION_SOFTWARE_VERSION_MAJOR 4
 #define ALICEVISION_SOFTWARE_VERSION_MINOR 0
 
 using namespace aliceVision;