deps: Update Mynah UI to 4.5.5

Problem:
- we are seeing multiple "Generating your answer..." cards in featureDev

Solution:
- update mynah ui to 4.5.5

Author: jpinkney-aws

package-lock.json

@@ -4315,7 +4315,7 @@
         "@aws-sdk/property-provider": "3.46.0",
         "@aws-sdk/smithy-client": "^3.46.0",
         "@aws-sdk/util-arn-parser": "^3.46.0",
-        "@aws/mynah-ui": "4.5.4",
+        "@aws/mynah-ui": "^4.5.5",
         "@gerhobbelt/gitignore-parser": "^0.2.0-9",
         "@iarna/toml": "^2.2.5",
         "@smithy/shared-ini-file-loader": "^2.2.8",