Loosen attrs requirement (#1645)

Author: epenet

poetry.lock

@@ -17,7 +17,7 @@ python = ">=3.10,<4.0"
 aiohttp = "^3.10.3"
 pyhumps = "^3.8.0"
 backoff = ">=1.10.0,<3.0"
-attrs = ">=21.2,<26.0"
+attrs = ">=21.2"
 boto3 = "^1.18.59"
 warrant-lite = "^1.0.4"
 backports-strenum = { version = "^1.2.4", python = "<3.11" }