Bump parallel from 1.18.0 to 1.19.0

Bumps [parallel](https://github.com/grosser/parallel) from 1.18.0 to 1.19.0.
- [Release notes](https://github.com/grosser/parallel/releases)
- [Commits](grosser/parallel@v1.18.0...v1.19.0)

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

Gemfile.lock

@@ -54,7 +54,7 @@ GEM
     multipart-post (2.1.1)
     naught (1.1.0)
     oj (3.9.2)
-    parallel (1.18.0)
+    parallel (1.19.0)
     parser (2.6.5.0)
       ast (~> 2.4.0)
     power_assert (1.1.5)