Bump listen from 3.1.5 to 3.2.1

Bumps [listen](https://github.com/guard/listen) from 3.1.5 to 3.2.1.
- [Release notes](https://github.com/guard/listen/releases)
- [Commits](guard/listen@v3.1.5...v3.2.1)

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

Author: dependabot[bot]

Gemfile.lock

@@ -154,7 +154,7 @@ GEM
       http-cookie (~> 1.0.0)
     faraday_middleware (0.14.0)
       faraday (>= 0.7.4, < 1.0)
-    ffi (1.9.25)
+    ffi (1.13.1)
     ffi-compiler (1.0.1)
       ffi (>= 1.0.0)
       rake
@@ -254,10 +254,9 @@ GEM
       http (>= 3.0, < 5.0)
       recursive-open-struct (~> 1.0, >= 1.0.4)
       rest-client (~> 2.0)
-    listen (3.1.5)
-      rb-fsevent (~> 0.9, >= 0.9.4)
-      rb-inotify (~> 0.9, >= 0.9.7)
-      ruby_dep (~> 1.2)
+    listen (3.2.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
     loggregator_emitter (5.2.0)
       beefcake (~> 1.0.0)
     loofah (2.5.0)
@@ -336,9 +335,9 @@ GEM
       thor (>= 0.19.0, < 2.0)
     rainbow (3.0.0)
     rake (13.0.1)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
     recursive-open-struct (1.1.0)
     representable (3.0.4)
       declarative (< 0.1.0)
@@ -401,7 +400,6 @@ GEM
     ruby-mysql (2.9.14)
     ruby-progressbar (1.10.1)
     ruby2_keywords (0.0.2)
-    ruby_dep (1.5.0)
     ruby_parser (3.8.3)
       sexp_processor (~> 4.1)
     rubyzip (2.3.0)
@@ -561,7 +559,7 @@ DEPENDENCIES
   rubyzip (>= 1.3.0)
   scientist (~> 1.1.0)
   sequel (~> 5.0)
-  sinatra (= 2.0.8.1)
+  sinatra (~> 2.0)
   sinatra-contrib
   solargraph
   spork!