bump CICD node versioning

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - uses: actions/setup-node@v1
         with:
-          node-version: 18
+          node-version: 16
 
       - uses: actions/checkout@v2
 
@@ -34,7 +34,7 @@ jobs:
     steps:
       - uses: actions/setup-node@v1
         with:
-          node-version: 18
+          node-version: 16
 
       - uses: actions/checkout@v2
 

.github/workflows/codecov.yml

@@ -14,7 +14,7 @@ jobs:
       - name: Generate coverage report
         uses: actions/setup-node@v1
         with:
-          node-version: '18'
+          node-version: '16'
       - run: npm install
       - run: npm run run-coverage
       - run: npm run generate-report

.github/workflows/publish.yaml

@@ -15,7 +15,7 @@ jobs:
     steps:
       - uses: actions/setup-node@v1
         with:
-          node-version: 18
+          node-version: 16
 
       - uses: actions/checkout@v2
       - name: Build

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix: 
-        node: [16, 18]
+        node: [16]
 
     steps:
       - uses: actions/setup-node@v1

.github/workflows/test_e2e.yml

@@ -85,7 +85,7 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v1
         with:
-          node-version: 18
+          node-version: 16
 
       - uses: actions/cache@v2
         id: cache-deps

.github/workflows/test_e2e_IBC.yml

@@ -226,7 +226,7 @@ jobs:
             - name: Setup Node.js
               uses: actions/setup-node@v1
               with:
-                node-version: 18
+                node-version: 16
 
             - uses: actions/cache@v2
               id: cache-deps

.github/workflows/upload.yaml

@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/setup-node@v1
         with:
-          node-version: 18
+          node-version: 16
 
       - uses: actions/checkout@v2
       - name: build lib