Bump gem versions to address CVEs
Bump gem versions to address CVEs

Loofah - [CVE-2018-16468](https://nvd.nist.gov/vuln/detail/CVE-2018-16468)
Rails-HTML-Sanitizer - [CVE-2018-3741](https://nvd.nist.gov/vuln/detail/CVE-2018-3741)

uniofbathdmc/bath-webhooks,uniofbathdmc/bath-webhooks,uniofbathdmc/bath-webhooks