Some server instances / provider versions return additional in server version string, which must be removed in order for server version to be serializable with "Version" class.
Removed usage of "NpgSqlDateTime" and "NpgSqlTimeSpan" classes in order to work with latest 7.0.x provider version
Needs "AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);" or migration of database's "timestamp" columns to "timestamtz" as described in the 6.0 documentation.