prepare release

Author: mununki

.changeset/purple-birds-know.md

@@ -0,0 +1,5 @@
+---
+"@greenlabs/rescript-daum-postcode": minor
+---
+
+Support ReScript v11

.github/workflows/release.yml

@@ -17,9 +17,9 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Setup Node.js
-        uses: actions/setup-node@v2
+        uses: actions/setup-node@v4
         with:
-          node-version: '14'
+          node-version: '20'
 
       - name: Install Dependencies
         run: yarn boot