Update rubocop to version 1.64.0

Gemfile.lock

@@ -216,7 +216,7 @@ GEM
     public_suffix (5.0.4)
     puma (6.4.2)
       nio4r (~> 2.0)
-    racc (1.7.3)
+    racc (1.8.0)
     rack (2.2.9)
     rack-test (2.1.0)
       rack (>= 1.3)
@@ -257,12 +257,13 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    regexp_parser (2.9.0)
-    rexml (3.2.6)
+    regexp_parser (2.9.2)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     roo (2.8.3)
       nokogiri (~> 1)
       rubyzip (>= 1.3.0, < 3.0.0)
-    rubocop (1.63.4)
+    rubocop (1.64.0)
       json (~> 2.3)
       language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
@@ -315,6 +316,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
+    strscan (3.1.0)
     thor (1.3.1)
     tilt (2.1.0)
     timecop (0.9.8)