ci: update auto deployment instructions (#206)

Author: kkrishguptaa

.github/workflows/deploy-node.yml

@@ -6,16 +6,14 @@ name: Node.js CI
 on:
   push:
     branches: [main]
-  pull_request:
-    branches: [main]
 
 jobs:
   build:
     runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        node-version: [14.x, 16.x]
+        node-version: [18.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps: