bump python sdk version to 0.1.3
bump python sdk version to 0.1.3

looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen,looker-open-source/sdk-codegen