add CloudWatchLogsClient::describeLogGroups() (#1914)

* add CloudWatchLogsClient::describeLogGroups()

* remove unneeded import

* fix tests

* fix tests

* fix: regenerate code

* fix: use Enum value

* add DescribeLogGroupsResponse.php to Psalm baseline

* regenerate code

* add DescribeLogGroups

---------

Co-authored-by: holtkamp <>

Author: holtkamp

CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 
 - AWS api-change: Added `us-isob-west-1` region
+- Added `DescribeLogGroups` method
 
 ### Dependency bumped