Remove raw string literals

Author: miguelaristy

src/Hangfire.PostgreSql/Scripts/Install.v23.sql

@@ -12,9 +12,9 @@ DROP INDEX IF EXISTS ix_hangfire_job_statename_is_not_null;
 DO $$
 BEGIN
     IF current_setting('server_version_num')::int >= 110000 THEN
-        EXECUTE 'CREATE INDEX ix_hangfire_job_statename_is_not_null ON job USING btree(statename) INCLUDE (id) WHERE statename IS NOT NULL';
+        CREATE INDEX ix_hangfire_job_statename_is_not_null ON job USING btree(statename) INCLUDE (id) WHERE statename IS NOT NULL;
     ELSE
-        EXECUTE 'CREATE INDEX ix_hangfire_job_statename_is_not_null ON job USING btree(statename) WHERE statename IS NOT NULL';
+		CREATE INDEX ix_hangfire_job_statename_is_not_null ON job USING btree(statename) WHERE statename IS NOT NULL;
     END IF;
 END $$;