Fixed #9620 - API V8 Token Expiration DateTime isn't stored in UTC

[deuks]

Made the fix to issue #9260 by formatting the Token Expiration DateTime object for both Refresh and Access Tokens.

How To Test This

To Test, simply request a token and then check database to be sure it is stored in UTC.

Types of changes

• [x ] Bug fix (non-breaking change which fixes an issue)

Final checklist

• [x ] My code follows the code style of this project found here.
• My change requires a change to the documentation.
• [x ] I have read the How to Contribute guidelines.

[SuiteBot]

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