Add changelog entries from latest v1 releases

Pulled in changes from 1.29.56

.changes/next-release/apichange-cognitoidp-57106.json

@@ -0,0 +1,5 @@
+{
+  "category": "``cognito-idp``",
+  "description": "The UserPoolType Status field is no longer used.",
+  "type": "api-change"
+}

.changes/next-release/apichange-firehose-78843.json

@@ -0,0 +1,5 @@
+{
+  "category": "``firehose``",
+  "description": "Features : Adding support for new data ingestion source to Kinesis Firehose - AWS Managed Services Kafka.",
+  "type": "api-change"
+}

.changes/next-release/apichange-iot-12440.json

@@ -0,0 +1,5 @@
+{
+  "category": "``iot``",
+  "description": "Added support for IoT Rules Engine Kafka Action Headers",
+  "type": "api-change"
+}

.changes/next-release/apichange-textract-78729.json

@@ -0,0 +1,5 @@
+{
+  "category": "``textract``",
+  "description": "This release adds new feature - Layout to Analyze Document API which can automatically extract layout elements such as titles, paragraphs, headers, section headers, lists, page numbers, footers, table areas, key-value areas and figure areas and order the elements as a human would read.",
+  "type": "api-change"
+}