[2.3.0] Checkmk Werk 15334 created: FIX mongodb_replica_set: compatibility with pymongo 3

[//]: # (werk v2) # FIX mongodb_replica_set: compatibility with pymongo 3 key | value ---------- | --- date | 2024-05-15T09:54:03+00:00 version | 2.3.0p3 class | fix edition | cre component | checks level | 1 compatible | yes [Werk #16174](https://checkmk.com/werk/16174) introduced a regression: If the checkmk agent plugin is running with pymongo version 3 the replication lag time stamp is interpreted as seconds, but its actually milliseconds. This results in errors like `ValueError (year 56319 is out of range)`. The check is now compatible with pymongo version 3 and 4.