Bump parallel from 1.19.1 to 1.19.2 (#14069)

Bumps [parallel](https://github.com/grosser/parallel) from 1.19.1 to 1.19.2.
- [Release notes](https://github.com/grosser/parallel/releases)
- [Commits](https://github.com/grosser/parallel/compare/v1.19.1...v1.19.2

)

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Gemfile.lock

@@ -404,7 +404,7 @@ GEM
     paperclip-av-transcoder (0.6.4)
       av (~> 0.9.0)
       paperclip (>= 2.5.2)
-    parallel (1.19.1)
+    parallel (1.19.2)
     parallel_tests (3.0.0)
       parallel
     parser (2.7.1.3)