Utilities/Release: Skip BootstrapTest for Linux binary

The build itself is done via bootstrap so there is no need to test
it again.  We already do this for the macOS binary.

Utilities/Release/linux64_release.cmake

@@ -35,6 +35,7 @@ OPENSSL_SSL_LIBRARY:FILEPATH=/home/kitware/openssl-1.0.2j/lib/libssl.a
 PYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3
 CPACK_SYSTEM_NAME:STRING=Linux-x86_64
 BUILD_QtDialog:BOOL:=TRUE
+CMAKE_SKIP_BOOTSTRAP_TEST:STRING=TRUE
 CMake_ENABLE_SERVER_MODE:BOOL=TRUE
 CMake_GUI_DISTRIBUTE_WITH_Qt_LGPL:STRING=3
 CMake_INSTALL_DEPENDENCIES:BOOL=ON