Embedded MongoDB uses HTTP rather than HTTPS by default to download Mongo binaries

Embedded MongoDB 1.x uses HTTP rather than HTTPS to download Mongo binaries. This has been [fixed in 2.x](https://github.com/flapdoodle-oss/de.flapdoodle.embed.mongo/commit/b925115be5868d0ff037045acaba95af474b4208) but 1.x has not be updated. We should update our auto-configuration to use `https` download paths by default.