Fixes #4099 - uuid format parameter validation should be case insensitive

[linelson]

Description

Makes validation for parameters of format uuid case-insensitive so that valid guids are no longer rejected.

Motivation and Context

Fixes #4099

How Has This Been Tested?

• Added test for uuid validation containing uppercase letters
• Ran the swagger ui locally and tested entering a guid containing upper case letters for a parameter with a uuid format

Screenshots (if appropriate):

Types of changes

• No code changes (changes to documentation, CI, metadata, etc)
• Dependency changes (any modification to dependencies in package.json)
• 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 change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

[shockey]

thanks @linelson!