[FSSDK-9586] update node versions (#911)

Author: raju-opti

.github/workflows/javascript.yml

@@ -17,7 +17,7 @@ jobs:
     - name: Set up Node
       uses: actions/setup-node@v3
       with:
-        node-version: 14
+        node-version: 16
         cache-dependency-path: ./package-lock.json
         cache: 'npm'
     - name: Run linting
@@ -50,7 +50,7 @@ jobs:
     - name: Set up Node
       uses: actions/setup-node@v3
       with:
-        node-version: 14
+        node-version: 16
         cache: 'npm'
         cache-dependency-path: ./package-lock.json
     - name: Cross-browser and umd unit tests
@@ -63,7 +63,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node: ['14', '16', '18' ]
+        node: ['16', '18', '20']
     steps:
     - uses: actions/checkout@v3
     - name: Set up Node ${{ matrix.node }}

package.json

@@ -94,7 +94,7 @@
   },
   "license": "Apache-2.0",
   "engines": {
-    "node": ">=14.0.0"
+    "node": ">=16.0.0"
   },
   "keywords": [
     "optimizely"