Fuse.Scripting: use IDictionary-interface of ConcurrentDictionary
Fuse.Scripting: use IDictionary-interface of ConcurrentDictionary

The public implementation of this interface is obsolete, so this removes
some warnings and keeps the code forward-compatible.

kusma/fuselibs-public,cbaggers/fuselibs-public,nekronos/fuselibs-public,fusetools/fuselibs-public,cbaggers/fuselibs-public,kusma/fuselibs-public,nekronos/fuselibs-public,cbaggers/fuselibs-public,fusetools/fuselibs-public,yupferris/fuselibs-public,yupferris/fuselibs-public,fusetools/fuselibs-public,yupferris/fuselibs-public,fusetools/fuselibs-public,kusma/fuselibs-public,eksperts/fuselibs-public,cbaggers/fuselibs-public,fusetools/fuselibs-public,eksperts/fuselibs-public,cbaggers/fuselibs-public,cbaggers/fuselibs-public,kusma/fuselibs-public,kusma/fuselibs-public,eksperts/fuselibs-public,eksperts/fuselibs-public,yupferris/fuselibs-public,eksperts/fuselibs-public,fusetools/fuselibs-public,kusma/fuselibs-public,cbaggers/fuselibs-public,yupferris/fuselibs-public,yupferris/fuselibs-public,yupferris/fuselibs-public,eksperts/fuselibs-public,fusetools/fuselibs-public,eksperts/fuselibs-public,nekronos/fuselibs-public,nekronos/fuselibs-public,kusma/fuselibs-public,nekronos/fuselibs-public,nekronos/fuselibs-public,nekronos/fuselibs-public