Use level 3 heading for blog titles

package.json

@@ -9,7 +9,7 @@
     "@types/bun": "^1.1.6"
   },
   "dependencies": {
-    "@11ty/eleventy": "^3.0.0-alpha.17",
+    "@11ty/eleventy": "^3.0.0-alpha.18",
     "@11ty/eleventy-navigation": "^0.3.5",
     "@11ty/eleventy-plugin-rss": "^2.0.2",
     "@11tyrocks/eleventy-plugin-emoji-readtime": "^1.0.1",

src/pages/blog.njk

@@ -26,14 +26,14 @@ eleventyComputed:
     <ul class="blog__posts">
     {% for post in postList %}
         <li class="blog__post">
-            <h2 class="blog__post--title">
+            <h3 class="blog__post--title">
                 <a href="{{ post.url }}">
                     {% if post.data.title %}{{ post.data.articleTitle }}
                     {% else %}
                         <code>{{ post.url }}</code>
                     {% endif %}
                 </a>
-            </h2>
+            </h3>
             <p class="blog__post--time">{{ post.date | formatDate }}</p>
             <p>{{ post.data.desc }}</p>
         </li>