Compute shaders compiling to spir-v version 1.6 generates Vulkan validation error due to OpExecutionMode

Compiling this shader (TestShader.comp):

#version 450

layout (local_size_x = 256) in;

void main() {
// Compute shader code
}

using this code:

shaderc::Compiler compiler;
shaderc::CompileOptions options;
options.SetTargetEnvironment(shaderc_target_env_vulkan, shaderc_env_version_vulkan_1_3);
options.SetWarningsAsErrors();
options.SetGenerateDebugInfo();
options.SetTargetSpirv(shaderc_spirv_version_1_6);
options.SetOptimizationLevel(shaderc_optimization_level_performance);
shaderc::SpvCompilationResult result = compiler.CompileGlslToSpv(shaderSource, shaderc_compute_shader, inputFileName, options);

generates this validation error when running vkCreateShaderModule:

`{ Validation } Validation Error: [ VUID-RuntimeSpirv-LocalSizeId-06434 ] | MessageID = 0xf95e08b7 | vkCreateShaderModule(): SPIR-V OpExecutionMode LocalSizeId is used but maintenance4 feature was not enabled. The Vulkan spec states: If Execution Mode LocalSizeId is used, maintenance4 must be enabled`

This does not happen if I change the target spir-v version to shaderc_spirv_version_1_5.
This does not happen if I compile it directly with `glslc.exe -c TestShader.comp`.

Tested on Vulkan version 1.3 with Vulkan SDK version 1.3.280.0 and whatever shaderc version is included there.