Update dependency marko to v2.2.0

Author: elastic-renovate-prod[bot]

pyproject.toml

@@ -24,7 +24,7 @@ dependencies = [
   "eql==0.9.19",
   "jsl==0.2.4",
   "jsonschema>=4.21.1",
-  "marko==2.0.3",
+  "marko==2.2.0",
   "marshmallow-dataclass[union]==8.6.1",
   "marshmallow-jsonschema~=0.13.0",
   "marshmallow-union~=0.1.15",