Update Rack to address CVEs (#401)

Author: Brian Kelly

Gemfile.lock

@@ -358,7 +358,7 @@ GEM
     puma (5.6.9)
       nio4r (~> 2.0)
     racc (1.8.1)
-    rack (2.2.13)
+    rack (2.2.17)
     rack-attack (6.7.0)
       rack (>= 1.0, < 4)
     rack-proxy (0.7.7)