Add changelog entries from botocore

.changes/next-release/api-change-appflow-53704.json

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+{
+  "type": "api-change",
+  "category": "``appflow``",
+  "description": "[``botocore``] Adding OAuth2.0 support for servicenow connector."
+}

.changes/next-release/api-change-ec2-40192.json

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+{
+  "type": "api-change",
+  "category": "``ec2``",
+  "description": "[``botocore``] This release adds 'outpost' location type to the DescribeInstanceTypeOfferings API, allowing customers that have been allowlisted for outpost to query their offerings in the API."
+}

.changes/next-release/api-change-elbv2-75552.json

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+{
+  "type": "api-change",
+  "category": "``elbv2``",
+  "description": "[``botocore``] Update elbv2 client to latest version"
+}

.changes/next-release/api-change-medialive-35970.json

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+{
+  "type": "api-change",
+  "category": "``medialive``",
+  "description": "[``botocore``] Adds advanced Output Locking options for Epoch Locking: Custom Epoch and Jam Sync Time"
+}

.changes/next-release/api-change-wafv2-78522.json

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+{
+  "type": "api-change",
+  "category": "``wafv2``",
+  "description": "[``botocore``] The targeted protection level of the Bot Control managed rule group now provides optional, machine-learning analysis of traffic statistics to detect some bot-related activity. You can enable or disable the machine learning functionality through the API."
+}