Bump listen from 3.5.1 to 3.7.1

Bumps [listen](https://github.com/guard/listen) from 3.5.1 to 3.7.1.
- [Release notes](https://github.com/guard/listen/releases)
- [Commits](guard/listen@v3.5.1...v3.7.1)

---
updated-dependencies:
- dependency-name: listen
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile

@@ -12,7 +12,7 @@ group(:build_site) do
   gem 'kramdown', '~> 2.3'
   gem 'vlad', '~> 2.7'
   gem 'vlad-git', '~> 2.1'
-  gem 'listen', '~> 3.5.1' # Preserve ability to run on Ruby 2.0, since listen 3.1 requires Ruby ~> 2.2.
+  gem 'listen', '~> 3.7.1' # Preserve ability to run on Ruby 2.0, since listen 3.1 requires Ruby ~> 2.2.
 end
 
 group(:generate_references) do

Gemfile.lock

@@ -32,7 +32,7 @@ GEM
       hocon (~> 1.3)
       thor (>= 1.0.1, < 2.0)
     fast_gettext (1.8.0)
-    ffi (1.15.4)
+    ffi (1.15.5)
     forwardable-extended (2.6.0)
     git (1.9.1)
       rchardet (~> 1.8)
@@ -67,7 +67,7 @@ GEM
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
-    listen (3.5.1)
+    listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     locale (2.1.3)
@@ -124,7 +124,7 @@ GEM
     rake-remote_task (2.4.4)
       open4 (~> 1.0)
       rake (>= 0.8, < 15.0)
-    rb-fsevent (0.11.0)
+    rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rchardet (1.8.0)
@@ -164,7 +164,7 @@ DEPENDENCIES
   jekyll (~> 4.1)
   json (~> 2.5)
   kramdown (~> 2.3)
-  listen (~> 3.5.1)
+  listen (~> 3.7.1)
   maruku (~> 0.7)
   nokogiri (>= 1.12.5)
   pandoc-ruby