Common timezone information

[WenzDaniel]

We should update

straxen/straxen/rundb.py

Line 280 in 88d3e4e

def run_metadata(self, run_id, projection=None):

such that all timestamps are returned with a proper timezone information to avoid confusion between UTC and LabTime.

[ricmperes]

This became an error inducing issue when setting the GPS_sync (#1045) and was solved with <datetime>.replace(tzinfo=datetime.timezone.utc)

straxen/straxen/plugins/acqmon_processing.py

Lines 284 to 285 in 78cf9aa

	start_t = doc['start'].replace(tzinfo=datetime.timezone.utc).timestamp()
	end_t = doc['end'].replace(tzinfo=datetime.timezone.utc).timestamp()