Bump websocket-extensions from 0.1.4 to 0.1.5

Bumps [websocket-extensions](https://github.com/faye/websocket-extensions-ruby) from 0.1.4 to 0.1.5.
- [Release notes](https://github.com/faye/websocket-extensions-ruby/releases)
- [Changelog](https://github.com/faye/websocket-extensions-ruby/blob/master/CHANGELOG.md)
- [Commits](faye/websocket-extensions-ruby@0.1.4...0.1.5)

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -73,6 +73,7 @@ GEM
     execjs (2.7.0)
     faraday (1.0.0)
       multipart-post (>= 1.2, < 3)
+    ffi (1.12.2)
     ffi (1.12.2-x64-mingw32)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
@@ -103,9 +104,12 @@ GEM
     mini_portile2 (2.4.0)
     minitest (5.14.0)
     mocha (1.11.2)
+    msgpack (1.3.3)
     msgpack (1.3.3-x64-mingw32)
     multipart-post (2.1.1)
     nio4r (2.5.2)
+    nokogiri (1.10.8)
+      mini_portile2 (~> 2.4.0)
     nokogiri (1.10.8-x64-mingw32)
       mini_portile2 (~> 2.4.0)
     octokit (4.16.0)
@@ -181,6 +185,8 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
+    sassc (2.2.1)
+      ffi (~> 1.9)
     sassc (2.2.1-x64-mingw32)
       ffi (~> 1.9)
     sawyer (0.8.2)
@@ -217,9 +223,10 @@ GEM
       railties (>= 5.0)
     websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.4)
+    websocket-extensions (0.1.5)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES