Fix Rails/SquishedSQLHeredocs cop (#24694)

db/migrate/20170920024819_status_ids_to_timestamp_ids.rb

@@ -4,7 +4,7 @@ class StatusIdsToTimestampIds < ActiveRecord::Migration[5.1]
     Mastodon::Snowflake.define_timestamp_id
 
     # Set up the statuses.id column to use our timestamp-based IDs.
-    ActiveRecord::Base.connection.execute(<<~SQL)
+    ActiveRecord::Base.connection.execute(<<~SQL.squish)
       ALTER TABLE statuses
       ALTER COLUMN id
       SET DEFAULT timestamp_id('statuses')
@@ -21,7 +21,7 @@ class StatusIdsToTimestampIds < ActiveRecord::Migration[5.1]
 
     # We lock the table during this so that the ID won't get clobbered,
     # but ID is indexed, so this should be a fast operation.
-    ActiveRecord::Base.connection.execute(<<~SQL)
+    ActiveRecord::Base.connection.execute(<<~SQL.squish)
       LOCK statuses;
       SELECT setval('statuses_id_seq', (SELECT MAX(id) FROM statuses));
       ALTER TABLE statuses

db/migrate/20180608213548_reject_following_blocked_users.rb

@@ -2,14 +2,14 @@ class RejectFollowingBlockedUsers < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    blocked_follows = Follow.find_by_sql(<<-SQL)
+    blocked_follows = Follow.find_by_sql(<<-SQL.squish)
       select f.* from follows f
       inner join blocks b on
         f.account_id = b.target_account_id and
         f.target_account_id = b.account_id
     SQL
 
-    domain_blocked_follows = Follow.find_by_sql(<<-SQL)
+    domain_blocked_follows = Follow.find_by_sql(<<-SQL.squish)
       select f.* from follows f
       inner join accounts following on f.account_id = following.id
       inner join account_domain_blocks b on

db/post_migrate/20190519130537_remove_boosts_widening_audience.rb

@@ -2,7 +2,7 @@ class RemoveBoostsWideningAudience < ActiveRecord::Migration[5.2]
   disable_ddl_transaction!
 
   def up
-    public_boosts = Status.find_by_sql(<<-SQL)
+    public_boosts = Status.find_by_sql(<<-SQL.squish)
       SELECT boost.id
       FROM statuses AS boost
       LEFT JOIN statuses AS boosted ON boost.reblog_of_id = boosted.id