Bump to v0.2.5.beta.0 [ci skip]
Bump to v0.2.5.beta.0 [ci skip]

appsignal/appsignal-ruby,codefarmdev/haystack,appsignal/appsignal-ruby,matrinox/appsignal-ruby,stijnster/appsignal-ruby,matrinox/appsignal-ruby,q-m/appsignal,appsignal/appsignal-ruby,appsignal/appsignal-ruby,matrinox/appsignal-ruby,appsignal/appsignal,subvisual/appsignal,stijnster/appsignal-ruby,stijnster/appsignal-ruby,rranelli/appsignal,appsignal/appsignal