Merge branch '3.1.x'

Closes gh-38016

Author: wilkinsona

Diff for: spring-boot-project/spring-boot-starters/README.adoc

@@ -88,6 +88,9 @@ do as they were designed before this was clarified.
 | https://elide.io/[Elide]
 | https://github.com/yahoo/elide/tree/master/elide-spring/elide-spring-boot-starter
 
+| https://github.com/flapdoodle-oss/de.flapdoodle.embed.mongo[Embedded MongoDB]
+| https://github.com/flapdoodle-oss/de.flapdoodle.embed.mongo.spring
+
 | ErroREST exception handler
 | https://github.com/mkopylec/errorest-spring-boot-starter