[Ruby] OpenAPI spec version is not being updated in spec/* files

Description

Calling swagger-codegen for the ruby client does not update the OpenAPI spec version in the comments of the spec files.

Swagger-codegen version

> swagger-codegen version
3.0.52

Swagger declaration file content or url

OpenAPI yaml spec:

https://gist.github.com/pijng/b3d09581c4f7bbf81bac4778dc8516f2

Command line used for generation

swagger-codegen generate -i ./openapi.yaml -l ruby -o /Projects/swagger-codegen-ruby/ --additional-properties gemName=moonlogs-ruby gemVersion=0.3.10

Steps to reproduce

1. Create an empty directory
2. Populate it with generated ruby client for version 0.3.10 using openapi.yaml spec from gist by calling:

swagger-codegen generate -i ./openapi.yaml -l ruby -o <path-to-directory> --additional-properties gemName=moonlogs-ruby gemVersion=0.3.10

3. Change the info.version to 0.3.11 in openapi.yaml
4. Call swagger-codegen against the updated openapi.yaml with relevant version in gemVersion:

swagger-codegen generate -i ./openapi.yaml -l ruby -o <path-to-same-directory> --additional-properties gemName=moonlogs-ruby gemVersion=0.3.11

As the result, all references to version 0.3.10 will be replaced by 0.3.11, except for files in the spec/ directory.

Demonstrating the difference between versions at a single point in time:

Related issues/PRs

Suggest a fix/enhancement

Reproduce the issue with the linked OpenAPI YAML and the two swagger-codegen generate commands, comparing generated files under spec/ before and after changing info.version and gemVersion. Trace the Ruby generator's handling of spec/* files and verify that rerunning generation updates their version comments from 0.3.10 to 0.3.11.