Use datetime.now(datetime.UTC) instead of datetime.utcnow()

[LeMyst]

No description provided.

[Copilot]

Pull Request Overview

This PR updates deprecated datetime.utcnow() calls to use the modern datetime.now(datetime.timezone.utc) approach. The utcnow() method has been deprecated in Python 3.12+ in favor of timezone-aware alternatives.

• Replaces datetime.utcnow() with datetime.now(datetime.timezone.utc) in logging statements
• Updates time value generation in the Time datatype to use the modern datetime approach

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.

File	Description
wikibaseintegrator/wbi_helpers.py	Updates two logging statements in rate limiting and maxlag error handling to use modern UTC datetime
wikibaseintegrator/datatypes/time.py	Updates "now" time value generation to use timezone-aware UTC datetime