Semver parsing does not accept all pre-release tags.

[peterzeller]

According to the semver spec, for pre-release tags:

Identifiers MUST comprise only ASCII alphanumerics and hyphens [0-9A-Za-z-]

However, Versionomy seems to accept only certain letters rc0 is accepted, but abc is not:

irb(main):004:0> Versionomy.parse('1.2.3-rc0')
=> #<Versionomy::Value:0x1cb4c "1.2.3-rc0">
irb(main):005:0> Versionomy.parse('1.2.3-abc')
/opt/homebrew/lib/ruby/gems/3.2.0/gems/versionomy-0.5.0/lib/versionomy/format/delimiter.rb:199:in `parse': Extra characters: "-abc" (Versionomy::Errors::ParseError)                                                        
        from /opt/homebrew/lib/ruby/gems/3.2.0/gems/versionomy-0.5.0/lib/versionomy/interface.rb:130:in `parse'
        from (irb):5:in `<main>'                            
        from /opt/homebrew/Cellar/ruby/3.2.2_1/lib/ruby/gems/3.2.0/gems/irb-1.6.2/exe/irb:11:in `<top (required)>'
        from /opt/homebrew/opt/ruby/bin/irb:25:in `load'    
        from /opt/homebrew/opt/ruby/bin/irb:25:in `<main>'