Add changelog entries from botocore

.changes/next-release/api-change-accessanalyzer-61623.json

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+{
+  "category": "``accessanalyzer``", 
+  "type": "api-change", 
+  "description": "[``botocore``] This release adds support for the ValidatePolicy API. IAM Access Analyzer is adding over 100 policy checks and actionable recommendations that help you validate your policies during authoring."
+}

.changes/next-release/api-change-gamelift-62492.json

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+{
+  "category": "``gamelift``", 
+  "type": "api-change", 
+  "description": "[``botocore``] GameLift expands to six new AWS Regions, adds support for multi-location fleets to streamline management of hosting resources, and lets you customize more of the game session placement process."
+}

.changes/next-release/api-change-iam-9739.json

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+{
+  "category": "``iam``", 
+  "type": "api-change", 
+  "description": "[``botocore``] Documentation updates for AWS Identity and Access Management (IAM)."
+}

.changes/next-release/api-change-lambda-37004.json

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+{
+  "category": "``lambda``", 
+  "type": "api-change", 
+  "description": "[``botocore``] Allow empty list for function response types"
+}

.changes/next-release/api-change-mediaconnect-92340.json

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+{
+  "category": "``mediaconnect``", 
+  "type": "api-change", 
+  "description": "[``botocore``] This release adds support for the SRT-listener protocol on sources and outputs."
+}

.changes/next-release/api-change-mediatailor-88863.json

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+{
+  "category": "``mediatailor``", 
+  "type": "api-change", 
+  "description": "[``botocore``] MediaTailor channel assembly is a new manifest-only service that allows you to assemble linear streams using your existing VOD content."
+}

.changes/next-release/api-change-mwaa-23091.json

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+{
+  "category": "``mwaa``", 
+  "type": "api-change", 
+  "description": "[``botocore``] This release adds UPDATE_FAILED and UNAVAILABLE MWAA environment states."
+}