デプロイ時の修正

backend/Gemfile.lock

@@ -276,6 +276,13 @@ GEM
       fugit (~> 1.11.0)
       railties (>= 7.1)
       thor (~> 1.3.1)
+    sprockets (4.2.1)
+      concurrent-ruby (~> 1.0)
+      rack (>= 2.2.4, < 4)
+    sprockets-rails (3.5.2)
+      actionpack (>= 6.1)
+      activesupport (>= 6.1)
+      sprockets (>= 3.0.0)
     sqlite3 (2.6.0-aarch64-linux-gnu)
     sqlite3 (2.6.0-aarch64-linux-musl)
     sqlite3 (2.6.0-arm-linux-gnu)
@@ -338,6 +345,7 @@ DEPENDENCIES
   solid_cable
   solid_cache
   solid_queue
+  sprockets-rails
   sqlite3 (>= 2.1)
   thruster
   tzinfo-data