Print human-readable timezone information

[DL6ER]

What does this implement/fix?

Add timezone information in human-readable timestamps.

This change has been triggered by a user seeking help after they had found a mismatch of timestamps between their two Pi-holes. We have been able to track it down to one server using a local timezone and the other one having been set to UTC.

Old

2024-05-30 19:45:08.488 [3519896M] DEBUG_QUERIES: time.nist.gov is known as not to be blocked

New

2024-05-30 19:45:08.488 CEST [3519896M] DEBUG_QUERIES: time.nist.gov is known as not to be blocked

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Related issue or feature (if applicable): (private communication)

Pull request in docs with documentation (if applicable): N/A

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1. I have read and understood the contributors guide, as well as this entire template. I understand which branch to base my commits and Pull Requests against.
2. I have commented my proposed changes within the code.
3. I am willing to help maintain this change if there are issues with it later.
4. It is compatible with the EUPL 1.2 license
5. I have squashed any insignificant commits. (git rebase)

Checklist:

• [x] The code change is tested and works locally.
• [x] I based my code and PRs against the repositories developmental branch.
• [x] I signed off all commits. Pi-hole enforces the DCO for all contributions
• [x] I signed all my commits. Pi-hole requires signatures to verify authorship
• [x] I have read the above and my PR is ready for review.

[github-actions[bot]]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[github-actions[bot]]

This pull request has conflicts, please resolve those before we can evaluate the pull request.

[github-actions[bot]]

Conflicts have been resolved.

[yubiuser]

I think this is a useful feature which should be used everywhere. v6 will break a lot of existing stuff, I think it's OK to change the log format. (I think to remember we already change the format from v5 to V6 by including message severity...)

[DL6ER]

@yubiuser The timezone is now always there