Use squiggly heredoc to strip odd indentation in the executed SQL

Before:

```
LOG:  execute <unnamed>:             SELECT t.oid, t.typname
                    FROM pg_type as t
                    WHERE t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'bool')

LOG:  execute <unnamed>:               SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, r.rngsubtype, t.typtype, t.typbasetype
                      FROM pg_type as t
                      LEFT JOIN pg_range as r ON oid = rngtypid
                      WHERE
                        t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'text', 'varchar', 'char', 'name', 'bpchar', 'bool', 'bit', 'varbit', 'timestamptz', 'date', 'money', 'bytea', 'point', 'hstore', 'json', 'jsonb', 'cidr', 'inet', 'uuid', 'xml', 'tsvector', 'macaddr', 'citext', 'ltree', 'interval', 'path', 'line', 'polygon', 'circle', 'lseg', 'box', 'time', 'timestamp', 'numeric')
                        OR t.typtype IN ('r', 'e', 'd')
                        OR t.typinput::varchar = 'array_in'
                        OR t.typelem != 0

LOG:  statement: SHOW TIME ZONE
LOG:  statement: SELECT 1
LOG:  execute <unnamed>:               SELECT COUNT(*)
                      FROM pg_class c
                      LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
                      WHERE c.relkind IN ('r','v','m') -- (r)elation/table, (v)iew, (m)aterialized view
                      AND c.relname = 'accounts'
                      AND n.nspname = ANY (current_schemas(false))
```

After:

```
LOG:  execute <unnamed>: SELECT t.oid, t.typname
        FROM pg_type as t
        WHERE t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'bool')

LOG:  execute <unnamed>: SELECT t.oid, t.typname, t.typelem, t.typdelim, t.typinput, r.rngsubtype, t.typtype, t.typbasetype
        FROM pg_type as t
        LEFT JOIN pg_range as r ON oid = rngtypid
                      WHERE
                        t.typname IN ('int2', 'int4', 'int8', 'oid', 'float4', 'float8', 'text', 'varchar', 'char', 'name', 'bpchar', 'bool', 'bit', 'varbit', 'timestamptz', 'date', 'money', 'bytea', 'point', 'hstore', 'json', 'jsonb', 'cidr', 'inet', 'uuid', 'xml', 'tsvector', 'macaddr', 'citext', 'ltree', 'interval', 'path', 'line', 'polygon', 'circle', 'lseg', 'box', 'time', 'timestamp', 'numeric')
                        OR t.typtype IN ('r', 'e', 'd')
                        OR t.typinput::varchar = 'array_in'
                        OR t.typelem != 0

LOG:  statement: SHOW TIME ZONE
LOG:  statement: SELECT 1
LOG:  execute <unnamed>: SELECT COUNT(*)
        FROM pg_class c
        LEFT JOIN pg_namespace n ON n.oid = c.relnamespace
        WHERE c.relkind IN ('r','v','m') -- (r)elation/table, (v)iew, (m)aterialized view
        AND c.relname = 'accounts'
        AND n.nspname = ANY (current_schemas(false))
```

1 files changed, 1 insertions, 1 deletions

diff --git a/activerecord/test/cases/adapters/postgresql/connection_test.rb b/activerecord/test/cases/adapters/postgresql/connection_test.rb
index 70aa189893..f0daea4266 100644
--- a/activerecord/test/cases/adapters/postgresql/connection_test.rb
+++ b/activerecord/test/cases/adapters/postgresql/connection_test.rb
@@ -230,7 +230,7 @@ module ActiveRecord
 
     def test_get_and_release_advisory_lock
       lock_id = 5295901941911233559
-      list_advisory_locks = <<-SQL
+      list_advisory_locks = <<~SQL
         SELECT locktype,
               (classid::bigint << 32) | objid::bigint AS lock_id
         FROM pg_locks