fix: (security) 1/ Setup APIGW API Key as a password encrypted discovery_credential in SNOW, and then use that in BusinessRule/Outbound REST messages to publish events from SNOW to Security IR; 2/ Replace SNOW Client Secret being stored in SSM with SecretsManager; 3/ Reduce the wildcard permissions to specific resources, and actions in the cdk; (documentation) 1/ Added a note for the users to expect 2-4 mins delay for new incidents sync between Security-IR and SNOW

fix: (security) 1/ Setup APIGW API Key as a password encrypted discovery_credential in SNOW, and then use that in BusinessRule/Outbound REST messages to publish events from SNOW to Security IR; 2/ Replace SNOW Client Secret being stored in SSM with SecretsManager; 3/ Reduce the wildcard permissions to specific resources, and actions in the cdk; (documentation) 1/ Added a note for the users to expect 2-4 mins delay for new incidents sync between Security-IR and SNOW #298