Amazon Polly Update: Add support for Mu-law and A-law codecs for output format

Author: AWS

.changes/next-release/feature-AmazonPolly-fd793ed.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "Amazon Polly",
+    "contributor": "",
+    "description": "Add support for Mu-law and A-law codecs for output format"
+}

services/polly/src/main/resources/codegen-resources/service-2.json

@@ -697,7 +697,9 @@
         "mp3",
         "ogg_opus",
         "ogg_vorbis",
-        "pcm"
+        "pcm",
+        "mulaw",
+        "alaw"
       ]
     },
     "OutputS3BucketName":{