ci: exclude data models yamls from prettier

.pre-commit-config.yaml

@@ -25,7 +25,13 @@ repos:
     rev: v3.1.0
     hooks:
       - id: prettier
-        args: [--ignore-unknown, --no-error-on-unmatched-pattern, "!chart/**"]
+        args:
+          [
+            --ignore-unknown,
+            --no-error-on-unmatched-pattern,
+            "!osm_fieldwork/data_models/**",
+            "!osm_fieldwork/xlsforms/**",
+          ]
 
   # Lint: Markdown
   - repo: https://github.com/igorshubovych/markdownlint-cli