Use version 4.13.0 of the govuk frontend toolkit
Use version 4.13.0 of the govuk frontend toolkit

# 4.13.0

- Make headings block-level by default. If you are styling elements you
want to be inline with heading includes, you’ll need to explicitly make
them inline in your CSS.

karlparton/my-govuk,companieshouse/ch-accounts-prototype,dwpdigitaltech/ejs-prototype,tsmorgan/marx,benjeffreys/hmcts-idam-proto,Demwunz/esif-prototype,chrishanes/pvb_prisoner_proto,karlparton/my-govuk,dwpdigitaltech/ejs-prototype,DilwoarH/GDS-Prototype-DM-SavedSearch,paulpod/invgov,BucksCountyCouncil/verify-local-patterns,tsmorgan/marx,gup-dwp/pip-prototype-v2,joelanman/govuk_prototype_kit,DilwoarH/GDS-Prototype-DM-SavedSearch,nhsbsa/ppc-prototype,paulpod/invgov,benjeffreys/hmcts-idam-proto,samwake/hoddat-cofc-caseworking,dwpdigitaltech/hrt-prototype,tsmorgan/marx,benjeffreys/hmcts-idam-proto,danblundell/verify-local-patterns,hannalaakso/accessible-timeout-warning,abbott567/govuk_prototype_kit,BucksCountyCouncil/verify-local-patterns,davedark/proto-timeline,abbott567/govuk_prototype_kit,chrishanes/pvb_prisoner_proto,dwpdigitaltech/hrt-prototype,alphagov/govuk_prototype_kit,kenmaddison-scc/verify-local-patterns,Demwunz/esif-prototype,DilwoarH/GDS-Prototype-DM-SavedSearch,companieshouse/ch-accounts-prototype,dwpdigitaltech/ejs-prototype,nhsbsa/ppc-prototype,abbott567/govuk_prototype_kit,kenmaddison-scc/verify-local-patterns,hannalaakso/accessible-timeout-warning,gavinwye/govuk_prototype_kit,arminio/govuk_prototype_kit,gup-dwp/pip-prototype-v2,danblundell/verify-local-patterns,joelanman/govuk_prototype_kit,Demwunz/esif-prototype,alphagov/govuk_prototype_kit,samwake/hoddat-cofc-caseworking,davedark/proto-timeline,samwake/hoddat-cofc-caseworking,BucksCountyCouncil/verify-local-patterns,davedark/proto-timeline,kenmaddison-scc/verify-local-patterns,paulpod/invgov,dwpdigitaltech/hrt-prototype,danblundell/verify-local-patterns,chrishanes/pvb_prisoner_proto,gup-dwp/pip-prototype-v2,joelanman/govuk_prototype_kit,arminio/govuk_prototype_kit,gavinwye/govuk_prototype_kit,nhsbsa/ppc-prototype,alphagov/govuk_prototype_kit,arminio/govuk_prototype_kit,karlparton/my-govuk,hannalaakso/accessible-timeout-warning