chore: caching CMM has too many instance attributes and that's ok

Author: mattsb42-aws

src/aws_encryption_sdk/materials_managers/caching.py

@@ -39,6 +39,7 @@
 
 @attr.s(hash=False)
 class CachingCryptoMaterialsManager(CryptoMaterialsManager):
+    # pylint: disable=too-many-instance-attributes
     """Crypto material manager which caches results from an underlying material manager.
 
     .. versionadded:: 1.3.0