Fix "can't modify frozen String" when "bundle install"
Fix "can't modify frozen String" when "bundle install"

vinternet-pds/parliament.uk-prototype,ukparliament/parliament.uk-prototype,C-N-J/parliament.uk-prototype,C-N-J/parliament.uk-prototype,cwaszczuk/parliament.uk-prototype,cwaszczuk/parliament.uk-prototype,vinternet-pds/parliament.uk-prototype,ukparliament/parliament.uk-prototype,vinternet-pds/parliament.uk-prototype,cwaszczuk/parliament.uk-prototype,ukparliament/parliament.uk-prototype,cwaszczuk/parliament.uk-prototype,C-N-J/parliament.uk-prototype,C-N-J/parliament.uk-prototype,ukparliament/parliament.uk-prototype,vinternet-pds/parliament.uk-prototype