Bump sprockets from 4.2.0 to 4.2.1 (#246)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -410,7 +410,7 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.8.0)
-    rack (3.1.4)
+    rack (3.1.7)
     rack-proxy (0.7.7)
       rack
     rack-session (2.0.0)
@@ -531,7 +531,7 @@ GEM
       json
       simplecov
     simplecov_json_formatter (0.1.4)
-    sprockets (4.2.0)
+    sprockets (4.2.1)
       concurrent-ruby (~> 1.0)
       rack (>= 2.2.4, < 4)
     sprockets-rails (3.5.1)