Update route_translator package to v15 (#112)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

template/{{app_name}}/Gemfile.lock

@@ -380,7 +380,7 @@ GEM
       railties (>= 5.2)
     rexml (3.4.1)
     rouge (4.5.2)
-    route_translator (14.2.0)
+    route_translator (15.2.0)
       actionpack (>= 6.1)
       activesupport (>= 6.1)
     rqrcode (3.1.0)