fix(servicehooks): HTTP headers can't be an integer
fix(servicehooks): HTTP headers can't be an integer

Fixes SENTRY-5SX

looker/sentry,ifduyue/sentry,ifduyue/sentry,ifduyue/sentry,looker/sentry,mvaled/sentry,mvaled/sentry,ifduyue/sentry,ifduyue/sentry,beeftornado/sentry,looker/sentry,looker/sentry,mvaled/sentry,looker/sentry,mvaled/sentry,mvaled/sentry,mvaled/sentry,beeftornado/sentry,beeftornado/sentry