Add JDA Version to Websocket errors

[Andre601]

Pull Request Etiquette

• I have checked the PRs for upcoming features/bug fixes.
• I have read the contributing guidelines.

Changes

• Internal code
• Library interface (affecting end-user code)
• Documentation
• Other: _____

Closes Issue: NaN

Description

Adds the JDA version to the "Got an unexpected error. Please redirect following message to the devs:" message, which may now look like this:

[00:00:01 ERROR]: [net.dv8tion.jda.internal.requests.WebSocketClient] Got an unexpected error. Please redirect following message to the devs:
JDA 4.3.0_307
MESSAGE_CREATE -> // JSON stuff
// Exception

This is mainly to help people, most importantly maintainers, to easily find out what version is used and if the error is caused by an outdated version of JDA or if the issue persists in newer builds and is therefore something to fix or look into.