Apt repository missing builds previously available on bintray

[spaulg]

I use Hashicorp Consul, which has specific compatibility of versions of Envoy (https://www.consul.io/docs/connect/proxies/envoy#supported-versions). Versions that were previously available on bintray are no longer available on the new repository host.

For example, these latest patch builds for the 16, 17 and 18 minor versions are missing:
getenvoy-envoy_1.16.4.p0.gbf5d0eb-1p74.gbb8060d_amd64.deb
getenvoy-envoy_1.17.3.p0.g46bf743-1p74.gbb8060d_amd64.deb
getenvoy-envoy_1.18.3.p0.g98c1c9e-1p77.gb76c773_amd64.deb

Oddly the version history on the Envoy docs do not list these, though they are tagged in github source. https://www.envoyproxy.io/docs/envoy/latest/version_history/version_history