chore: update ci to node 20 (#11)

Author: mnaumanali94

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
       - run: npm ci
       - run: npm test
       - run: npm run type-check

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           cache: npm
       - run: npm ci
       - run: npm test