Update whizard to 3.1.5

To run the testing, add a comment with:

Bot test PACKAGE[ PACKAGE2 ...]|all in TOOLCHAIN|all [(only|also) for ARCH-LABEL-COMPILER-BUILDTYPE] please!

later followed by

Bot repeat please!

To ensure patches required for existing LCG branches are not lost, please add the respective labels: alsoTargeting:LCG_102-patches, alsoTargeting:master, etc.

cmake/toolchain/heptools-devkey.cmake

@@ -98,5 +98,5 @@ if(NOT ${LCG_OS} MATCHES mac)
   LCG_external_package(fccanalyses                          0.10.0) # Until https://github.com/HEP-FCC/FCCAnalyses/issues/417 is fixed
   LCG_external_package(freeglut                              3.6.0) # Taken from the system on Mac
   LCG_external_package(babayaga                           fcc1.0.0) # Does not build on MacOS
-  LCG_external_package(whizard                               3.1.4) # Has dependencies that are not build on MacOS
+  LCG_external_package(whizard           3.1.5                                    ) # Has dependencies that are not build on MacOS
 endif()