Bump rack from 2.2.3 to 2.2.6.2

Bumps [rack](https://github.com/rack/rack) from 2.2.3 to 2.2.6.2.
- [Release notes](https://github.com/rack/rack/releases)
- [Changelog](https://github.com/rack/rack/blob/main/CHANGELOG.md)
- [Commits](rack/rack@2.2.3...v2.2.6.2)

---
updated-dependencies:
- dependency-name: rack
  dependency-type: indirect
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -380,7 +380,9 @@ GEM
     mime-types (3.3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2020.1104)
-    mimemagic (0.3.5)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.11.0)
     mini_mime (1.0.2)
     mini_portile2 (2.5.0)
@@ -441,7 +443,7 @@ GEM
       premailer (~> 1.7, >= 1.7.9)
     public_suffix (4.0.6)
     racc (1.5.2)
-    rack (2.2.3)
+    rack (2.2.6.2)
     rack-attack (6.5.0)
       rack (>= 1.0, < 3)
     rack-cors (1.1.1)