* update template for required field validation when additional properties are not allowed
* regenerate samples
* move bytes import from template to GoClientCodegen
* regenerate samples
* add test for model with required fields and additionalProperties: false
* fix: change indent style to tab in the mustache to generate Go code
* docs: standardize the language names for code blocks
* docs: change indent style to tab in the code blocks
* update: regenerate samples
* `./bin/generate-samples.sh ./bin/configs/*.yaml`
