Bump rack-livereload from 0.3.17 to 0.5.2

Bumps [rack-livereload](https://github.com/onesupercoder/rack-livereload) from 0.3.17 to 0.5.2.
- [Commits](https://github.com/onesupercoder/rack-livereload/commits/v0.5.2)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -382,8 +382,8 @@ GEM
     rack (2.2.9)
     rack-cors (2.0.2)
       rack (>= 2.0.0)
-    rack-livereload (0.3.17)
-      rack
+    rack-livereload (0.5.2)
+      rack (< 3)
     rack-mini-profiler (3.3.1)
       rack (>= 1.2.0)
     rack-protection (3.2.0)