Add changelog entries from botocore

.changes/next-release/api-change-computeoptimizer-35684.json

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+{
+  "type": "api-change",
+  "category": "``compute-optimizer``",
+  "description": "[``botocore``] Adds support for new Compute Optimizer capability that makes it easier for customers to optimize their EC2 instances by leveraging multiple CPU architectures."
+}

.changes/next-release/api-change-databrew-54835.json

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+{
+  "type": "api-change",
+  "category": "``databrew``",
+  "description": "[``botocore``] This SDK release adds support for specifying a Bucket Owner for an S3 location."
+}

.changes/next-release/api-change-ec2-88433.json

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+{
+  "type": "api-change",
+  "category": "``ec2``",
+  "description": "[``botocore``] New feature: Updated EC2 API to support faster launching for Windows images. Optimized images are pre-provisioned, using snapshots to launch instances up to 65% faster."
+}

.changes/next-release/api-change-lookoutmetrics-14293.json

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+{
+  "type": "api-change",
+  "category": "``lookoutmetrics``",
+  "description": "[``botocore``] This release adds FailureType in the response of DescribeAnomalyDetector."
+}

.changes/next-release/api-change-transcribe-66698.json

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+{
+  "type": "api-change",
+  "category": "``transcribe``",
+  "description": "[``botocore``] Documentation updates for Amazon Transcribe."
+}