Bump split from 3.3.2 to 3.4.0

Bumps [split](https://github.com/splitrb/split) from 3.3.2 to 3.4.0.
- [Release notes](https://github.com/splitrb/split/releases)
- [Changelog](https://github.com/splitrb/split/blob/master/CHANGELOG.md)
- [Commits](splitrb/split@v3.3.2...v3.4.0)

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

Author: dependabot-preview[bot]

Gemfile.lock

@@ -5,18 +5,18 @@ GEM
     rack (2.0.7)
     rack-protection (2.0.7)
       rack
-    redis (4.1.0)
+    redis (4.1.3)
     simple-random (1.0.3)
     sinatra (2.0.7)
       mustermann (~> 1.0)
       rack (~> 2.0)
       rack-protection (= 2.0.7)
       tilt (~> 2.0)
-    split (3.3.2)
+    split (3.4.0)
       redis (>= 2.1)
       simple-random (>= 0.9.3)
       sinatra (>= 1.2.6)
-    tilt (2.0.9)
+    tilt (2.0.10)
 
 PLATFORMS
   ruby