DYN-8272 Update RestSharp to v112.0.0 (#15494)

[QilongTang]

Purpose

CherryPick #15494 to RC3.3.1 to update RestSharp from v108 to v112.

Tested locally that the package manager still works:

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

update RestSharp from v108 to v112 to address security vulnerability

Reviewers

@DynamoDS/dynamo

FYIs

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[github-actions]

See the ticket for this pull request: https://jira.autodesk.com/browse/DYN-7393

[QilongTang]

Thank you @reddyashish Forgot to update about box which was covered on master in a different PR. Should be ready now and waiting for PR checks

[github-actions]

See the ticket for this pull request: https://jira.autodesk.com/browse/DYN-8272

[QilongTang]

Addressed merge conflicts