accidental deletion of custom formats test

.github/workflows/acceptance-test.yml

@@ -46,6 +46,18 @@ jobs:
             __tests__/**/test1.yml
             __tests__/**/test*.json
 
+      - name: acceptance test - custom formats
+        uses: ./
+        id: json-yaml-validate-custom-formats-test
+        with:
+          comment: "true"
+          json_schema: ./__tests__/fixtures/schemas/schema_with_custom_ajv_regexp_format.json
+          ajv_custom_regexp_formats: |
+            lowercase_char=^[a-z]*$
+            lowercase_alphanumeric=^[a-z0-9]*$
+          files: |
+            __tests__/fixtures/json/custom_ajv_regexp_format/valid.json
+
       - name: acceptance test - flat yaml
         uses: ./
         id: json-yaml-validate-flat-yaml-test