v0.3.1

Fixed

• Add new field allow_custom_routing in data_stream section of index_template, which appears only in Elasticsearch version 8.0.0. Make sure index_template resource can work with both 7.x and 8.x versions (#72)
• Panic using elasticstack_elasticsearch_security_user_data_source when the user absent or there is not enough permissions to fetch users from ES API (#73)
• Fix typo in the index alias model (#78)