fix GremlinValueComparator

[robfrank]

What does this PR do?

fix failing Gremlin test

Checklist

• I have run the build using mvn clean package command
• My unit tests cover both failure and success scenarios

[codacy-production]

Not up to standards ⛔

🔴 Issues 1 minor

Alerts:
⚠ 1 issue (≤ 0 issues of at least minor severity)

Results:
1 new issue

Category	Results
CodeStyle	1 minor

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[gemini-code-assist]

Code Review

This pull request extends date handling support by adding java.time.OffsetDateTime to DateUtils and implementing a specialized dateComparator in GremlinValueComparator to handle mixed date types with nanosecond precision. Additionally, the type resolution logic in GremlinValueComparator was refactored for better performance. Feedback was provided regarding a potential overflow issue in DateUtils when calculating nanosecond timestamps for dates far in the future, as well as a warning that the new dateComparator may yield incorrect results for LocalDate types due to existing precision bugs in the underlying utility methods.