Update changelog based on model updates

Author: aws-sdk-python-automation

.changes/next-release/api-change-ec2-85455.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``ec2``",
+  "description": "MaximumEbsAttachments and AttachmentLimitType fields added to DescribeInstanceTypesResponse. G6f, Gr6f, R8i, R8i-flex and p5.4xlarge instance types added to InstanceTypes enum."
+}

.changes/next-release/api-change-neptune-23518.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``neptune``",
+  "description": "Removed the deprecated marker from publiclyAccessible parameter from DbInstance, CreateDbInstance and ModifyDbInstance and added relevant usage information for the parameter."
+}

.changes/next-release/api-change-notifications-47350.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``notifications``",
+  "description": "Added Org support for notifications:  - `ListMemberAccounts` gets member accounts list, `AssociateOrganizationalUnit` links OU to notification configuration, `DisassociateOrganizationalUnit` removes OU from notification configuration, `ListOrganizationalUnits` shows OUs configured for notifications."
+}

.changes/next-release/api-change-workmail-3762.json

@@ -0,0 +1,5 @@
+{
+  "type": "api-change",
+  "category": "``workmail``",
+  "description": "Make RoleArn an optional parameter for the PutEmailMonitoringConfiguration API, and add UnsupportedOperationException to RegisterToWorkMail."
+}