roachtest: deflake activerecord

Currently, the activerecord test suite is failing on the quoting
subtests. To address this we will add those tests into the ignore list.

Fixes: #156441

Release note: None

Author: fqazi

pkg/cmd/roachtest/tests/activerecord_blocklist.go

@@ -47,6 +47,9 @@ var activeRecordIgnoreList = blocklist{
 	`ActiveRecord::CockroachDBStructureDumpTest#test_structure_dump`:                                                                                           "flaky",
 	`ActiveRecord::ConnectionAdapters::ConnectionPoolThreadTest#test_checkout_fairness_by_group`:                                                               "flaky",
 	`ActiveRecord::ConnectionAdapters::PostgreSQLAdapterTest#test_translate_no_connection_exception_to_not_established`:                                        "pg_terminate_backend not implemented",
+	`ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::QuotingTest#test_quote_big_decimal`:                                                                  "unknown",
+	`ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::QuotingTest#test_quote_integer`:                                                                      "unknown",
+	`ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::QuotingTest#test_quote_rational`:                                                                     "unknown",
 	`ActiveRecord::Encryption::EncryptableRecordTest#test_by_default,_it's_case_sensitive`:                                                                     "flaky",
 	`ActiveRecord::Encryption::EncryptableRecordTest#test_forced_encoding_for_deterministic_attributes_will_replace_invalid_characters`:                        "flaky",
 	`AssociationCallbacksTest#test_has_many_callbacks_for_destroy_on_parent`:                                                                                   "flaky",