Bump parallel from 1.12.1 to 1.13.0

Bumps [parallel](https://github.com/grosser/parallel) from 1.12.1 to 1.13.0.
- [Release notes](https://github.com/grosser/parallel/releases)
- [Commits](grosser/parallel@v1.12.1...v1.13.0)

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

Gemfile.lock

@@ -51,7 +51,7 @@ GEM
     notiffany (0.1.1)
       nenv (~> 0.1)
       shellany (~> 0.0)
-    parallel (1.12.1)
+    parallel (1.13.0)
     parser (2.6.0.0)
       ast (~> 2.4.0)
     powerpack (0.1.2)