Bump rethinkdb from 2.3.3 to 2.4.2 (openstf#116)

Bumps [rethinkdb](https://github.com/rethinkdb/rethinkdb) from 2.3.3 to 2.4.2.
- [Release notes](https://github.com/rethinkdb/rethinkdb/releases)
- [Commits](https://github.com/rethinkdb/rethinkdb/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Karol Wrótniak <karol.wrotniak@droidsonroids.pl>

yarn.lock

@@ -836,15 +836,11 @@ bluebird@3.4.x, bluebird@~3.4.1:
   version "2.11.0"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-2.11.0.tgz#534b9033c022c9579c56ba3b3e5a5caafbb650e1"
 
-bluebird@^3:
+bluebird@^3, bluebird@^3.3.0, bluebird@^3.3.3, bluebird@^3.4.7:
   version "3.7.2"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.7.2.tgz#9f229c15be272454ffa973ace0dbee79a1b0c36f"
   integrity sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg==
 
-bluebird@^3.3.0, bluebird@^3.3.3, bluebird@^3.4.7:
-  version "3.5.0"
-  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.0.tgz#791420d7f551eea2897453a8a77653f96606d67c"
-
 bluebird@~1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-1.1.1.tgz#744e9980145e2ebc41a9e34826f913096667fb33"
@@ -8419,8 +8415,9 @@ ret@~0.1.10:
   resolved "https://registry.yarnpkg.com/ret/-/ret-0.1.14.tgz#58c636837b12e161f8a380cf081c6a230fd1664e"
 
 rethinkdb@^2.0.2:
-  version "2.3.3"
-  resolved "https://registry.yarnpkg.com/rethinkdb/-/rethinkdb-2.3.3.tgz#3dc6586e22fa1dabee0d254e64bd0e379fad2f72"
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/rethinkdb/-/rethinkdb-2.4.2.tgz#9c5d8dde3300ddacfdfae0fc8ded3754602d447a"
+  integrity sha512-6DzwqEpFc8cqesAdo07a845oBRxLiHvWzopTKBo/uY2ypGWIsJQFJk3wjRDtSEhczxJqLS0jnf37rwgzYAw8NQ==
   dependencies:
     bluebird ">= 2.3.2 < 3"