Update generated code (#1828)

update generated code

Author: async-aws-bot

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## NOT RELEASED
 
+### Changed
+
+- AWS enhancement: Documentation updates.
+
 ## 1.23.0
 
 ### Added

src/Sts/Input/AssumeRoleRequest.php

@@ -230,8 +230,8 @@ final class AssumeRoleRequest extends Input
      * source identity, see Monitor and control actions taken with assumed roles [^3] in the *IAM User Guide*.
      *
      * The regex used to validate this parameter is a string of characters consisting of upper- and lower-case alphanumeric
-     * characters with no spaces. You can also include underscores or any of the following characters: =,.@-. You cannot use
-     * a value that begins with the text `aws:`. This prefix is reserved for Amazon Web Services internal use.
+     * characters with no spaces. You can also include underscores or any of the following characters: +=,.@-. You cannot
+     * use a value that begins with the text `aws:`. This prefix is reserved for Amazon Web Services internal use.
      *
      * [^1]: https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles.html#iam-term-role-chaining
      * [^2]: https://docs.aws.amazon.com/IAM/latest/UserGuide/reference_policies_condition-keys.html#condition-keys-sourceidentity

src/Sts/Input/AssumeRoleWithWebIdentityRequest.php

@@ -55,7 +55,8 @@ final class AssumeRoleWithWebIdentityRequest extends Input
      * The OAuth 2.0 access token or OpenID Connect ID token that is provided by the identity provider. Your application
      * must get this token by authenticating the user who is using your application with a web identity provider before the
      * application makes an `AssumeRoleWithWebIdentity` call. Timestamps in the token must be formatted as either an integer
-     * or a long integer. Only tokens with RSA algorithms (RS256) are supported.
+     * or a long integer. Tokens must be signed using either RSA keys (RS256, RS384, or RS512) or ECDSA keys (ES256, ES384,
+     * or ES512).
      *
      * @required
      *