chore(dependabot): update schedule to use cron (#937)

Author: FajarKim

.github/dependabot.yml

@@ -4,7 +4,9 @@ updates:
   - package-ecosystem: npm
     directory: "/"
     schedule:
-      interval: weekly
+      interval: cron
+      cronjob: "0 0 1 */2 *"
+      timezone: "Asia/Jakarta"
     open-pull-requests-limit: 10
     commit-message:
       prefix: "build(deps)"
@@ -14,7 +16,9 @@ updates:
   - package-ecosystem: github-actions
     directory: "/"
     schedule:
-      interval: weekly
+      interval: cron
+      cronjob: "0 0 1 */2 *"
+      timezone: "Asia/Jakarta"
     open-pull-requests-limit: 10
     commit-message:
       prefix: "build(deps)"