⬆️ Bump lumberjack from 1.2.6 to 1.2.7

Bumps [lumberjack](https://github.com/bdurand/lumberjack) from 1.2.6 to 1.2.7.
- [Release notes](https://github.com/bdurand/lumberjack/releases)
- [Changelog](https://github.com/bdurand/lumberjack/blob/master/CHANGELOG.md)
- [Commits](bdurand/lumberjack@v1.2.6...v1.2.7)

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

Gemfile.lock

@@ -75,7 +75,7 @@ GEM
     listen (3.2.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
-    lumberjack (1.2.6)
+    lumberjack (1.2.7)
     method_source (1.0.0)
     minitest (5.14.1)
     multi_json (1.15.0)