Bump websocket-driver from 0.7.2 to 0.7.3 (#14410)

Bumps [websocket-driver](https://github.com/faye/websocket-driver-ruby) from 0.7.2 to 0.7.3.
- [Release notes](https://github.com/faye/websocket-driver-ruby/releases)
- [Changelog](https://github.com/faye/websocket-driver-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/faye/websocket-driver-ruby/compare/0.7.2...0.7.3)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -657,7 +657,7 @@ GEM
     webpush (0.3.8)
       hkdf (~> 0.2)
       jwt (~> 2.0)
-    websocket-driver (0.7.2)
+    websocket-driver (0.7.3)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     wisper (2.0.1)