Replace getBytes("UTF-8") with getBytes(StandardCharsets.UTF_8)

[StrongestNumber9]

Description

Replace getBytes("UTF-8") with getBytes(StandardCharsets.UTF_8)

Use case or motivation behind the feature request

It doesn't throw when using well defined StandardCharsets -> no need to do try/catch for something that we know is not going to throw

Related issues

Additional context

No: relpBatch.insert(syslogMessage.toRfc5424SyslogMessage().getBytes("UTF-8"));
Yes: relpBatch.insert(syslogMessage.toRfc5424SyslogMessage().getBytes(StandardCharsets.UTF_8));

[StrongestNumber9]

I think this should be done together with #37