fix: set yaml parser load option to JSON_SCHEMA (#8023)

test/e2e-cypress/tests/features/spec-parse-to-json.js

@@ -0,0 +1,23 @@
+/**
+ * @prettier
+ */
+
+describe("Parse YAML as YAML@1.2 with json_schema for all JSON-supported types", () => {
+  it("should have date string even without quotes", () => {
+    cy.visit("/?url=/documents/features/spec-parse-to-json.yaml")
+      .get("#operations-default-get_foo")
+      .click()
+      // Responses -> example value tab
+      .get(".language-json > :nth-child(3)")
+      .should("have.text", "\"without-quotes\"")
+      .get(".language-json > :nth-child(5)")
+      .should("have.text", "\"1999-11-31\"")
+      // Responses -> schema tab
+      .get(".model-example > .tab > :nth-child(2)")
+      .click()
+      .get(":nth-child(1) > :nth-child(2) > .model > :nth-child(1) > .prop > .property") // first element, without-quotes
+      .should("have.text", "example: 1999-11-31")
+      .get(":nth-child(2) > :nth-child(2) > .model > :nth-child(1) > .prop > .property") // second element, with quotes
+      .should("have.text", "example: 1999-12-31")
+  })
+})