chore: clean up dependabot config (#584)

* chore: change dependabot package ecosystem from npm to bun

* chore: use npm package ecosystem

Author: gloriababic

.github/dependabot.yml

@@ -9,18 +9,14 @@ updates:
     directory: /
     schedule:
       interval: daily
+
   - package-ecosystem: github-actions
     directory: /
     schedule:
       interval: daily
 
   - package-ecosystem: npm
-    directory: /apps/blog
-    schedule:
-      interval: daily
-
-  - package-ecosystem: npm
-    directory: /packages/tailwind
+    directory: /packages/remark-plugin
     schedule:
       interval: daily