Feat: TLSv1.3 support

[kares]

Implements TLS 1.3 support in the plugin, using existing tls_min_version / tls_max_version options.
The plugin was lacking TLS testing thus it's been added.

NOTE: a follow-up minor release is planned, where the protocol configuration will be changed to ssl_supported_protocols => ... and the tls_min_version / tls_max_version options are going to be deprecated.
But for now this is worth shipping as a patch release.

[robbavey]

Great stuff! Thanks for adding the SSL testing ❤️

Tests are failing on 6.8 with

Java::JavaxNetSsl::SSLHandshakeException:
       No appropriate protocol (protocol is disabled or cipher suites are inappropriate)

when using a modern Java8 JVM that supports TLS1.3, such as OpenJDK Runtime Environment (Temurin)(build 1.8.0_322-b06) on my local box, plus 1.8.0_282-b08 in the testing environment.

[kares]

when using a modern Java8 JVM that supports TLS1.3, such as OpenJDK Runtime Environment (Temurin)(build 1.8.0_322-b06) on my local box, plus 1.8.0_282-b08 in the testing environment.

my bad - did not realize the TLS 1.3 detection won't do, due Manticore itself (used for testing) on Java 8 without the jdk.tls.client.protocols=TLSv1.3 system property - simply due the way TLSv1.3 support was added in Java 8

added a different way to detect whether TLS in client mode includes 1.3

[robbavey]

Great stuff!

Only thought here is whether this should be a minor update, rather than patch, as it is adding a new feature plus a tiny comment nit

[robbavey]

Given that this is an added feature, rather than a bug fix, does it make sense to make this a minor rather than patch release?

[kares]

fine by me, thought the changes are fully backwards compatible but it makes sense ... updated