chore: upgrade @aws-cdk/integ-runner to 2.186.5 (#34385)

### Issue # (if applicable)

N/A

### Reason for this change

The integ tests changed in this PR are failing the yarn upgrade job: #34378

This is because recommended value of the `createNewPoliciesWithAddToRolePolicy` feature flag changed in the `integ-runner` package: 

aws/aws-cdk-cli@4bd6149#diff-cc2aa6328f725cd5a81d9ded74633857d38594c65a715e3411b80ec52ca5cdacR68

So making this PR specifically for upgrading `@aws-cdk/integ-runner` and updating the snapshots required by it.

### Description of changes

Upgraded `@aws-cdk/integ-runner`, then updated the snapshots

### Description of how you validated changes

There is no actual code change to CDK constructs.

Checked the snapshots and see expected changes resulted from feature flag value being changed.

### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: samson-keung

packages/@aws-cdk-testing/framework-integ/package.json

@@ -30,7 +30,7 @@
   "license": "Apache-2.0",
   "devDependencies": {
     "@aws-cdk/cdk-build-tools": "0.0.0",
-    "@aws-cdk/integ-runner": "^2.186.0",
+    "@aws-cdk/integ-runner": "^2.186.5",
     "@aws-cdk/pkglint": "0.0.0",
     "@aws-sdk/client-acm": "3.632.0",
     "@aws-sdk/client-rds": "3.632.0",

packages/@aws-cdk-testing/framework-integ/test/aws-appsync/test/integ.appsync-eventapi-opensearch.js.snapshot/EventApiOpenSearchStack.assets.json

@@ -206,6 +206,16 @@
          ]
         }
        ]
+      },
+      {
+       "Action": "lambda:GetFunction",
+       "Effect": "Allow",
+       "Resource": {
+        "Fn::GetAtt": [
+         "createIndexFunction1E9F2BC6",
+         "Arn"
+        ]
+       }
       }
      ],
      "Version": "2012-10-17"
@@ -261,32 +271,6 @@
     "providerframeworkonEventServiceRole72DDF894"
    ]
   },
-  "providerframeworkonEventinlinePolicyAddedToExecutionRole03EFE4C1C": {
-   "Type": "AWS::IAM::Policy",
-   "Properties": {
-    "PolicyDocument": {
-     "Statement": [
-      {
-       "Action": "lambda:GetFunction",
-       "Effect": "Allow",
-       "Resource": {
-        "Fn::GetAtt": [
-         "createIndexFunction1E9F2BC6",
-         "Arn"
-        ]
-       }
-      }
-     ],
-     "Version": "2012-10-17"
-    },
-    "PolicyName": "providerframeworkonEventinlinePolicyAddedToExecutionRole03EFE4C1C",
-    "Roles": [
-     {
-      "Ref": "providerframeworkonEventServiceRole72DDF894"
-     }
-    ]
-   }
-  },
   "OpenSearchIndexResource": {
    "Type": "AWS::CloudFormation::CustomResource",
    "Properties": {