Migrate more code to typescript

src/components/blog/SinglePost.astro

@@ -5,7 +5,7 @@ import SocialShare from '~/components/atoms/SocialShare.astro';
 
 import { getFormattedDate } from '~/utils/utils';
 
-import type { Post } from '~/utils/posts';
+import type { Post } from "~/types"
 
 export interface Props {
 	post: Post;