chore: fix tests

__mocks__/modules/index.ts

@@ -1,2 +1,3 @@
 import "./disqus-react";
 import "./next-link";
+import "./next-image";

__mocks__/modules/next-image.tsx

@@ -0,0 +1,9 @@
+jest.mock("next/image", () => {
+  const React = require("react");
+
+  return function NextImage(props: any) {
+    return <img {...props}>{props.children}</img>;
+  };
+});
+
+export default {};