refactor(starter): upgrade to new version of gatsby

src/components/Post/Content/__snapshots__/Content.test.tsx.snap

@@ -0,0 +1,21 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Content renders correctly 1`] = `
+<div
+  className="content"
+>
+  <h1
+    className="content__title"
+  >
+    test
+  </h1>
+  <div
+    className="content__body"
+    dangerouslySetInnerHTML={
+      Object {
+        "__html": "<p>test</p>",
+      }
+    }
+  />
+</div>
+`;