chore: use node 18 for besu asset exchange workflow

Signed-off-by: Sandeep Nishad <[email protected]>

.github/workflows/test_asset-exchange-besu.yml

@@ -36,10 +36,10 @@ jobs:
           java-version: '11'
           distribution: 'adopt'
 
-      - name: Use Node.js 14.x
-        uses: actions/setup-node@v2
+      - name: Use Node.js v18.18.2
+        uses: actions/setup-node@v4.0.2
         with:
-          node-version: 14.x
+          node-version: v18.18.2
 
       - name: Use Protoc 3.15
         run: |
@@ -215,10 +215,10 @@ jobs:
           java-version: '11'
           distribution: 'adopt'
 
-      - name: Use Node.js 14.x
-        uses: actions/setup-node@v2
+      - name: Use Node.js v18.18.2
+        uses: actions/setup-node@v4.0.2
         with:
-          node-version: 14.x
+          node-version: v18.18.2
 
       - name: Use Protoc 3.15
         run: |