Update .fernignore to include ISSUE_TEMPLATE (#548)

Author: fern-support

.fernignore

@@ -4,6 +4,7 @@ README.md
 src/cohere/client.py
 tests
 .github/workflows/ci.yml
+.github/ISSUE_TEMPLATE
 LICENSE
 .github/workflows/tests.yml
 src/cohere/utils.py
@@ -12,4 +13,4 @@ src/cohere/config.py
 src/cohere/manually_maintained
 src/cohere/bedrock_client.py
 src/cohere/aws_client.py
-src/cohere/sagemaker_client.py
+src/cohere/sagemaker_client.py