Bump guard from 2.15.1 to 2.16.0

Bumps [guard](https://github.com/guard/guard) from 2.15.1 to 2.16.0.
- [Release notes](https://github.com/guard/guard/releases)
- [Commits](guard/guard@v2.15.1...v2.16.0)

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

Gemfile.lock

@@ -10,7 +10,7 @@ GEM
     ffi (1.11.1)
     foreman (0.86.0)
     formatador (0.2.5)
-    guard (2.15.1)
+    guard (2.16.0)
       formatador (>= 0.2.4)
       listen (>= 2.7, < 4.0)
       lumberjack (>= 1.0.12, < 2.0)