add list of unknownKeywords for Kestra

Author: benpops89

src/schema-validation.jsonc

@@ -112,6 +112,7 @@
     "json-api-1.0.json",
     "json-patch.json",
     "jsone.json",
+    "kestra-0.18.json",
     "kong_json_schema.json",
     "kustomization.json",
     "label-commenter-config.json",
@@ -707,6 +708,14 @@
         "allowTrailingCommas"
       ]
     },
+    "kestra-0.18.json": {
+      "unknownKeywords": [
+        "markdownDescription",
+        "$deprecated",
+        "$dynamic",
+        "$metrics"
+      ]
+    },
     "launchsettings.json": {
       "unknownKeywords": ["allowTrailingCommas"]
     },