Bump guard from 2.15.0 to 2.16.2

Bumps [guard](https://github.com/guard/guard) from 2.15.0 to 2.16.2.
- [Release notes](https://github.com/guard/guard/releases)
- [Commits](guard/guard@v2.15.0...v2.16.2)

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

Gemfile.lock

@@ -8,17 +8,17 @@ GEM
   remote: http://www.rubygems.org/
   specs:
     byebug (11.1.3)
-    coderay (1.1.2)
+    coderay (1.1.3)
     diff-lcs (1.4.4)
     dotenv (2.7.6)
     faraday (1.3.0)
       faraday-net_http (~> 1.0)
       multipart-post (>= 1.2, < 3)
       ruby2_keywords
     faraday-net_http (1.0.1)
-    ffi (1.10.0)
+    ffi (1.15.0)
     formatador (0.2.5)
-    guard (2.15.0)
+    guard (2.16.2)
       formatador (>= 0.2.4)
       listen (>= 2.7, < 4.0)
       lumberjack (>= 1.0.12, < 2.0)
@@ -32,22 +32,21 @@ GEM
       guard (~> 2.1)
       guard-compat (~> 1.1)
       rspec (>= 2.99.0, < 4.0)
-    listen (3.1.5)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-      ruby_dep (~> 1.2)
-    lumberjack (1.0.13)
-    method_source (0.9.2)
+    listen (3.4.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    lumberjack (1.2.8)
+    method_source (1.0.0)
     multipart-post (2.1.1)
     nenv (0.3.0)
-    notiffany (0.1.1)
+    notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)
-    pry (0.12.2)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    pry (0.14.0)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
@@ -63,9 +62,8 @@ GEM
       rspec-support (~> 3.10.0)
     rspec-support (3.10.2)
     ruby2_keywords (0.0.4)
-    ruby_dep (1.5.0)
     shellany (0.0.1)
-    thor (0.20.3)
+    thor (1.1.0)
 
 PLATFORMS
   ruby