do not require optional gems

Gemfile.lock

@@ -72,9 +72,6 @@ GEM
       activerecord (>= 3.2, < 8.0)
       rake (>= 10.4, < 14.0)
     ast (2.4.2)
-    audited (5.3.3)
-      activerecord (>= 5.0, < 7.1)
-      request_store (~> 1.2)
     aws-eventstream (1.2.0)
     aws-partitions (1.781.0)
     aws-sdk-core (3.175.0)
@@ -489,7 +486,6 @@ PLATFORMS
 
 DEPENDENCIES
   annotate
-  audited
   aws-sdk-s3
   azure-storage-blob
   better_html