Added spec to ensure next page tokens are escaped.
Added spec to ensure next page tokens are escaped.

sqrrrl/google-api-ruby-client,landonwilkins/google-api-ruby-client,googleapis/google-api-ruby-client,sguss2024/google-api-ruby-client,jamox/google-api-ruby-client,jmburges/google-api-ruby-client,saicheems/google-api-ruby-client,d11wtq/google-api-client,jonahglover/google-api-ruby-client,barancw/google-api-ruby-client,keylimetoolbox/google-api-ruby-client,jacquescrocker/google-api-ruby-client,sugitak/google-api-ruby-client,keylimetoolbox/google-api-ruby-client,cocktail-io/google-api-ruby-client,austin-wang/google-api-ruby-client,rusikf/google-api-ruby-client,hunzinker/google-api-ruby-client,andihalimi3/ruby-newb,xsunsmile/google-api-ruby,austin-wang/google-api-ruby-client,sqrrrl/google-api-ruby-client,saicheems/google-api-ruby-client,sugitak/google-api-ruby-client,backupify/google-api-ruby-client,rusikf/google-api-ruby-client,remi/google-api-ruby-client,MaxGabriel/google-api-ruby-client,ip2k/google-api-ruby-client,MaxGabriel/google-api-ruby-client,cocktail-io/google-api-ruby-client,railsjedi/google-api-ruby-client,jonahglover/google-api-ruby-client,hanpanpan200/google-api-ruby-client,hunzinker/google-api-ruby-client,andihalimi3/ruby-newb,remi/google-api-ruby-client,hanpanpan200/google-api-ruby-client,jmburges/google-api-ruby-client,landonwilkins/google-api-ruby-client,barancw/google-api-ruby-client,googleapis/google-api-ruby-client,jamox/google-api-ruby-client