Make migration consistent with deployed version (#2498)

At some point, a trailing newline got deleted from a SQL migration, but this
file must be byte-for-byte equal with the version which has already been
deployed, where the trailing newline is present.

sequencer/api/migrations/postgres/V14__state_tables.sql

@@ -34,4 +34,4 @@ ALTER TABLE
 ADD 
   CONSTRAINT block_merkle_tree_pk PRIMARY KEY (path, created);
 
-CREATE INDEX block_merkle_tree_created ON block_merkle_tree (created);
+CREATE INDEX block_merkle_tree_created ON block_merkle_tree (created);