Bump rack from 2.2.2 to 2.2.6.2

Bumps [rack](https://github.com/rack/rack) from 2.2.2 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@v2.2.2...v2.2.6.2)

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

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

Gemfile.lock

@@ -79,6 +79,7 @@ GEM
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     erubi (1.9.0)
+    ffi (1.12.2)
     ffi (1.12.2-x64-mingw32)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
@@ -112,14 +113,18 @@ GEM
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.0)
+    msgpack (1.3.3)
     msgpack (1.3.3-x64-mingw32)
     net-http-digest_auth (1.4.1)
     net-http-persistent (3.1.0)
       connection_pool (~> 2.2)
     nio4r (2.5.2)
+    nokogiri (1.10.9)
+      mini_portile2 (~> 2.4.0)
     nokogiri (1.10.9-x64-mingw32)
       mini_portile2 (~> 2.4.0)
     ntlm-http (0.1.1)
+    pg (1.2.2)
     pg (1.2.2-x64-mingw32)
     polyamorous (2.3.2)
       activerecord (>= 5.2.1)
@@ -129,7 +134,7 @@ GEM
     public_suffix (4.0.3)
     puma (4.3.3)
       nio4r (~> 2.0)
-    rack (2.2.2)
+    rack (2.2.6.2)
     rack-proxy (0.6.5)
       rack
     rack-test (1.1.0)
@@ -170,6 +175,8 @@ GEM
     rubyzip (2.3.0)
     sass-rails (6.0.0)
       sassc-rails (~> 2.1, >= 2.1.1)
+    sassc (2.2.1)
+      ffi (~> 1.9)
     sassc (2.2.1-x64-mingw32)
       ffi (~> 1.9)
     sassc-rails (2.1.2)
@@ -229,6 +236,7 @@ GEM
 
 PLATFORMS
   x64-mingw32
+  x86_64-linux
 
 DEPENDENCIES
   bootsnap (>= 1.4.2)