Fix old unique jobs digests not having been cleaned up (#13683)

db/migrate/20200508212852_reset_unique_jobs_locks.rb

+class ResetUniqueJobsLocks < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def up
+    # We do this to clean up unique job digests that were not properly
+    # disposed of prior to https://github.com/tootsuite/mastodon/pull/13361
+
+    SidekiqUniqueJobs::Digests.delete_by_pattern('*', count: SidekiqUniqueJobs::Digests.count)
+  end
+
+  def down; end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_04_17_125749) do
+ActiveRecord::Schema.define(version: 2020_05_08_212852) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"