fix: hesai_decoder replace mktime with timegm

[amc-nu]

PR Type

• Bug Fix

Description

Hesai Decoder. Replace std::mktime with timegm to take into consideration non UTC times.

Review Procedure

• Play a rosbag with pandar_packets msg
• Launch the hesai_decoder corresponding to the packets being played.
• Confirm the decoded timestamp matches the current Time Zone.

Pre-Review Checklist for the PR Author

PR Author should check the checkboxes below when creating the PR.

• Assign PR to reviewer

Checklist for the PR Reviewer

Reviewers should check the checkboxes below before approval.

• Commits are properly organized and messages are according to the guideline
• (Optional) Unit tests have been written for new behavior
• PR title describes the changes

Post-Review Checklist for the PR Author

PR Author should check the checkboxes below before merging.

• All open points are addressed and tracked via issues or tickets

CI Checks

• Build and test for PR: Required to pass before the merge.

[drwnz]

LGTM

[mojomex]

LGTM

[0x126]

LGTM