Upgrade to eventutilities 1.4.6
Fix a bug where event timestamp are not parsed properly leading to the
producer job to fail with:
java.time.format.DateTimeParseException: Text
'2025-09-05T07:51:31.430+0000' could not be parsed, unparsed text found
at index 23
Adapt the test because of changes made to EventRowSerializer.
Upgrade the parent pom & maven version to allow downloading artifacts
from gitlab.
Bug: T372912