Bump websocket-driver from 0.8.1 to 0.8.2 in /demo

Bumps [websocket-driver](https://github.com/faye/websocket-driver-ruby) from 0.8.1 to 0.8.2.
- [Changelog](https://github.com/faye/websocket-driver-ruby/blob/main/CHANGELOG.md)
- [Commits](faye/websocket-driver-ruby@0.8.1...0.8.2)

---
updated-dependencies:
- dependency-name: websocket-driver
  dependency-version: 0.8.2
  dependency-type: indirect
...

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

Author: dependabot[bot]

demo/Gemfile.lock

@@ -369,7 +369,7 @@ GEM
       mutex_m
       rack-proxy (~> 0.6, >= 0.6.1)
       zeitwerk (~> 2.2)
-    websocket-driver (0.8.1)
+    websocket-driver (0.8.2)
       base64
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)