Bump redis from 4.7.1 to 4.8.0

Bumps [redis](https://github.com/redis/redis-rb) from 4.7.1 to 4.8.0.
- [Release notes](https://github.com/redis/redis-rb/releases)
- [Changelog](https://github.com/redis/redis-rb/blob/master/CHANGELOG.md)
- [Commits](https://github.com/redis/redis-rb/compare/v4.7.1...v4.8.0)

---
updated-dependencies:
- dependency-name: redis
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -493,7 +493,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     redcarpet (3.5.1)
-    redis (4.7.1)
+    redis (4.8.0)
     regexp_parser (2.5.0)
     reline (0.3.1)
       io-console (~> 0.5)
@@ -622,7 +622,7 @@ GEM
     stringex (2.8.5)
     stripe (7.0.0)
     temple (0.8.2)
-    test-prof (1.0.9)
+    test-prof (1.0.10)
     test-unit (3.5.3)
       power_assert
     thor (1.2.1)