Use rejectattr instead of ansible.builtin.remove_keys due to templating bug

Author: medanthelinium

templates/elasticsearch/elasticsearch.yml.j2

@@ -1,5 +1,5 @@
 {% if elasticsearch.version is not defined or elasticsearch.version is version('8', '<') %}
 {{ elasticsearch['elasticsearch.yml'] | to_nice_yaml(indent=2) }}
 {% else %}
-{{ elasticsearch['elasticsearch.yml'] | ansible.utils.remove_keys(target=['system_call_filter', 'bootstrap']) | to_nice_yaml(indent=2) }}
+{{ (elasticsearch['elasticsearch.yml'] | dict2items | rejectattr('key', 'in', ['system_call_filter', 'bootstrap']) | items2dict) | to_nice_yaml(indent=2) }}
 {% endif %}