-Werror: deprecated enum -> enum conversion

[Asti0s]

Hello, i'm making this issue to signal that spirv tools cant actually compile using werror due to a deprecated enum conversion:

SPIRV-Tools/tools/diff/diff.cpp: In function ‘std::unique_ptrspvtools::opt::IRContext {anonymous}::load_module(const char*)’:
SPIRV-Tools/tools/diff/diff.cpp:90:54: error: bitwise operation between different enumeration types ‘spvtools::SpirvTools::’ and ‘spv_text_to_binary_options_t’ is deprecated [-Werror=deprecated-enum-enum-conversion]
90 | spvtools::SpirvTools::kDefaultAssembleOption |
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
91 | SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[s-perron]

@ShabbyX The file mentioned is in spirv-diff. Can you take a look?