Fixes config keys for smtps protocol

[bkositza]

Description

Note that if you're using the "smtps" protocol to access SMTP over SSL, all the properties would be named "mail.smtps.*".

Additional Notes

• This PR fixes or works on following ticket(s): SIRI-1023

Checklist

• Code change has been tested and works locally
• Code was formatted via IntelliJ and follows SonarLint & best practices
• Patch Tasks: Is local execution of Patch Tasks necessary? If so, please also mark the PR with the tag.

[jakobvogel]

1. This seems to be breaking, as at least configurations need to be adapted? Am I right?
2. If so, is it necessary? I.e. is this really a "bug" or just a "convention" that we are no longer happy with and want to change?

[bkositza]

1. This seems to be breaking, as at least configurations need to be adapted? Am I right?
2. If so, is it necessary? I.e. is this really a "bug" or just a "convention" that we are no longer happy with and want to change?

Only the keys of the system properties are adjusted here, as these are read out accordingly by SMTP protocol provider, as can be read here (link below). Therefore it is a real bug.
https://eclipse-ee4j.github.io/angus-mail/docs/api/org.eclipse.angus.mail/org/eclipse/angus/mail/smtp/package-summary.html

"Note that if you're using the "smtps" protocol to access SMTP over SSL, all the properties would be named "mail.smtps.*"."