Merge branch 'v3.8.x'

# Conflicts:
#	src/language-markdown/embed.js
#	tests/format/misc/errors/front-matter/__snapshots__/format.test.js.snap

scripts/release/steps/merge-blog-post.js

@@ -21,5 +21,5 @@ export default async function mergeBlogPost({
   );
 
   await waitForEnter();
-  await runGit(["pull", repo]);
+  await runGit(["pull", "--repo", repo]);
 }