Bump rack from 3.1.14 to 3.1.16 (#106)

Resolves CVE-2022-44571.

rack/rack@v3.1.14...v3.1.16

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

Author: dependabot[bot]

template/{{app_name}}/Gemfile.lock

@@ -320,7 +320,7 @@ GEM
       rspec-mocks (~> 3.12)
       rspec-support (~> 3.12)
     racc (1.8.1)
-    rack (3.1.14)
+    rack (3.1.16)
     rack-session (2.1.1)
       base64 (>= 0.1.0)
       rack (>= 3.0.0)