feat: Allow Newtonsoft.Json >= 13.0.2 (from =13.0.3)

[dhunt-xsolla]

What kind of change does this PR introduce?

feat!: Allow Newtonsoft.Json >= 13.0.2 (from =13.0.3)

What is the current behavior?

Disallows client-server parity due to the current Unity LTS limitations

Unity 6 LTS uses max 13.0.2, currently

What is the new behavior?

Allows Unity 6 LTS backwards compatibility, useful for client-server parity

Additional context

Just a minor version diff. Since it allows .2+, it's not breaking