chore: change dependabot package ecosystem from npm to bun

Author: gloriababic

.github/dependabot.yml

@@ -5,26 +5,22 @@
 
 version: 2
 updates:
-  - package-ecosystem: npm
+  - package-ecosystem: bun
     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
+  - package-ecosystem: bun
+    directory: /packages/remark-plugin
     schedule:
       interval: daily
 
-  - package-ecosystem: npm
+  - package-ecosystem: bun
     directory: /apps/website
     schedule:
       interval: daily