fix: pin metadata-version to 2.3 (#4990)

Author: benieric

pyproject.toml

@@ -73,13 +73,15 @@ pattern = "(?P<version>.+)"
 [tool.hatch.metadata.hooks.custom]
 
 [tool.hatch.build.targets.wheel]
+core-metadata-version = "2.3"
 packages = ["src/sagemaker"]
 exclude = ["src/sagemaker/serve/model_server/triton/pack_conda_env.sh"]
 
 [tool.hatch.build.targets.wheel.shared-scripts]
 "src/sagemaker/serve/model_server/triton/pack_conda_env.sh" = "pack_conda_env.sh"
 
 [tool.hatch.build.targets.sdist]
+core-metadata-version = "2.3"
 only-include = [
   "/requirements/extras",
   "/src",