fix(app): Intermittent Cognito user add bug

As discussed in the below GH issue, we were seeing intermittent stack
deployment errors due to the AwsCustomResource for creating the demo
Cognito user. Upgrading CDK did not help by itself, but disabling
install_latest_aws_sdk *seems* to have made the configuration stable.

infra/cdk_src/cognito.py

@@ -75,7 +75,8 @@ def __init__(
             policy=AwsCustomResourcePolicy.from_sdk_calls(
                 resources=AwsCustomResourcePolicy.ANY_RESOURCE
             ),
-            install_latest_aws_sdk=True,
+            # TODO: Should we re-enable? Disabled for https://github.com/aws/aws-cdk/issues/30067
+            # install_latest_aws_sdk=True,
         )
 
         # Force set the password, to avoid inescapable FORCE_PASSWORD_CHANGE status:
@@ -98,7 +99,8 @@ def __init__(
             policy=AwsCustomResourcePolicy.from_sdk_calls(
                 resources=AwsCustomResourcePolicy.ANY_RESOURCE
             ),
-            install_latest_aws_sdk=True,
+            # TODO: Should we re-enable? Disabled for https://github.com/aws/aws-cdk/issues/30067
+            # install_latest_aws_sdk=True,
         )
         set_password_cr.node.add_dependency(create_user_cr)
 

infra/package.json

@@ -27,7 +27,7 @@
   "license": "MIT-0",
   "private": true,
   "dependencies": {
-    "aws-cdk": "2.126.0"
+    "aws-cdk": "2.140.0"
   },
   "engines": {
     "node": ">=18"

infra/requirements.txt

@@ -1,6 +1,9 @@
 # aws-cdk-lib>=2.109.0 for Python 3.12 Lambda runtime, smstudio.domain to be able to set the
 # "StudioWebPortal" user setting to force classic Studio experience
-aws-cdk-lib==2.126.0
-aws-cdk.aws-lambda-python-alpha==2.126.0-alpha.0
+# >=2.140 to try and avoid 'Package @aws-sdk/client-cognito-identity-provider does not exist.' on
+# AwsCustomResource (this version includes fix for related failure to upgrade AWS SDK)
+# See: https://github.com/aws/aws-cdk/issues/30067
+aws-cdk-lib==2.140.0
+aws-cdk.aws-lambda-python-alpha==2.140.0-alpha.0
 constructs>=10.0.0,<11.0.0
 upsert-slr>=1.0.2,<2