Add changelog entries from botocore

.changes/next-release/api-change-comprehendmedical-32827.json

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+{
+  "type": "api-change",
+  "category": "``comprehendmedical``",
+  "description": "[``botocore``] Update to Amazon Comprehend Medical documentation."
+}

.changes/next-release/api-change-connect-14072.json

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+{
+  "type": "api-change",
+  "category": "``connect``",
+  "description": "[``botocore``] GetMetricDataV2 API: Channels filters do not count towards overall limitation of 100 filter values."
+}

.changes/next-release/api-change-kms-19027.json

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+{
+  "type": "api-change",
+  "category": "``kms``",
+  "description": "[``botocore``] Added Dry Run Feature to cryptographic and cross-account mutating KMS APIs (14 in all). This feature allows users to test their permissions and parameters before making the actual API call."
+}

.changes/next-release/api-change-mgn-52220.json

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+{
+  "type": "api-change",
+  "category": "``mgn``",
+  "description": "[``botocore``] This release introduces the Global view feature and new Replication state APIs."
+}

.changes/next-release/api-change-securityhub-51761.json

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+{
+  "type": "api-change",
+  "category": "``securityhub``",
+  "description": "[``botocore``] Documentation updates for AWS Security Hub"
+}