ci: set node-version to 20 (#37)

## 🎯 Changes

- changed node-version to `20`

## ✅ Checklist

- [x] I have followed every step in the [contributing guide](https://github.com/saud-alnasser/cachescribe/blob/main/CONTRIBUTING.md).
- [x] If necessary, I have added or updated the tests related to the changes made.
- [x] If necessary, I have added documentation related to the changes made.

.github/workflows/integration.yml

@@ -21,7 +21,7 @@ jobs:
       - name: '🔧 setup node'
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: 'pnpm'
 
       - name: '📦 install dependencies'

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
       - name: '🔧 setup node'
         uses: actions/setup-node@v4
         with:
-          node-version: 18
+          node-version: 20
           cache: 'pnpm'
 
       - name: '📦 install dependencies'