Update dependency rubocop to v1.57.2 (mastodon#27719)

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

Gemfile.lock

@@ -535,7 +535,7 @@ GEM
     pundit (2.3.1)
       activesupport (>= 3.0.0)
     raabro (1.4.0)
-    racc (1.7.1)
+    racc (1.7.3)
     rack (2.2.8)
     rack-attack (6.7.0)
       rack (>= 1.0, < 4)
@@ -648,8 +648,7 @@ GEM
       rspec-mocks (~> 3.0)
       sidekiq (>= 5, < 8)
     rspec-support (3.12.1)
-    rubocop (1.57.1)
-      base64 (~> 0.1.1)
+    rubocop (1.57.2)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)