Bump crass from 1.0.5 to 1.0.6

Bumps [crass](https://github.com/rgrove/crass) from 1.0.5 to 1.0.6.
- [Release notes](https://github.com/rgrove/crass/releases)
- [Changelog](https://github.com/rgrove/crass/blob/master/HISTORY.md)
- [Commits](rgrove/crass@v1.0.5...v1.0.6)

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

Author: dependabot-preview[bot]

Gemfile.lock

@@ -71,7 +71,7 @@ GEM
     coffee-script-source (1.12.2)
     concurrent-ruby (1.1.5)
     connection_pool (2.2.2)
-    crass (1.0.5)
+    crass (1.0.6)
     debug_inspector (0.0.3)
     declarative (0.0.10)
     declarative-option (0.1.0)