Use new markdown syntax highlighter b/c it’s cool, v4.0.2

package.json

@@ -1,6 +1,6 @@
 {
   "name": "eleventy-base-blog",
-  "version": "4.0.1",
+  "version": "4.0.2",
   "description": "A starter repository for a blog web site using the Eleventy static site generator.",
   "scripts": {
     "build": "npx eleventy",
@@ -22,9 +22,9 @@
   },
   "homepage": "https://github.com/11ty/eleventy-base-blog#readme",
   "dependencies": {
-    "@11ty/eleventy": "^0.3.1",
+    "@11ty/eleventy": "^0.3.3",
     "@11ty/eleventy-plugin-rss": "^1.0.2",
-    "@11ty/eleventy-plugin-syntaxhighlight": "^1.0.3",
+    "@11ty/eleventy-plugin-syntaxhighlight": "^1.0.4",
     "luxon": "^1.0.0"
   }
 }