feat(download_it): add the possibility to download missing versions

[mdevolde]

feat(download_it): add the possibility to download missing versions

Why the pull request was made

Add the possibility to download releases that are not published on https://languagetool.org/download/.
The missing releases have been built and made available on https://github.com/jxmorris12/language_tool_python/releases.
These releases can now be retrieved from the language_tool_python lib.

Summary of changes

• Add the possibility to download 6.7 and 6.8 releases from language_tool_python lib.

Screenshots (if appropriate):

Not applicable.

How has this been tested?

Downloaded the missing versions.

Resources

Not applicable.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update (changes to documentation only)
• Refactor / code style update (non-breaking change that improves code structure or readability)
• Tests / CI improvement (adding or updating tests or CI configuration only)
• Other (please describe):

Checklist

• Followed the project's contributing guidelines.
• Updated any relevant tests.
• Updated any relevant documentation.
• Added comments to your code where necessary.
• Formatted your code, run the linters, checked types and tests.