bump @aws-sdk/client-appsync from 3.309.0 to 3.470.0 #1230

Job	Run time
lint	2m 24s
style	1m 19s
readonly tests	4m 8s
setup-basic-integration-test	1m 9s
setup-common-test	1m 21s
setup-module-test	1m 10s
iasql_upgrade test	5m 2s
basic-integration.test.GET_SQL_FOR_TRANSACTION	55s
basic-integration.test.REVERT	55s
basic-integration.test.COMMIT	1m 30s
basic-integration.test.AUTOMATIC_MODE	54s
basic-integration.test.INSTALL	1m 25s
basic-integration.test.ROLLBACK	58s
basic-integration.test.UNINSTALL	56s
build-and-push	3m 17s
common.test.AWS_DIFF	1m 7s
common.test.GET_SQL_SINCE	4m 4s
common.test.CANONICAL_IAM_POLICY	1m 4s
common.test.TOTAL_FAILURE	3m 44s
common.test.CREATE_REVIEW	4m 2s
common.test.METADATA	4m 34s
common.test.BASIC_DB	2m 36s
common.test.TABLE_ACCESS	3m 17s
common.test.ALL_MODULES_HAVE_TABLES	4m 26s
common.test.SIMPLE_INTEGRATION	5m 39s
common.test.DEP_SORTING	1m 1s
module test ${{ matrix.module }}	0s
get-pr-debug-info	0s
log-pr-debug-info	0s
	1h 2m 57s

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