fix: ci workflow only on canary branch (#20)

Author: shahradelahi

.github/workflows/ci.yml

@@ -2,6 +2,8 @@ name: CI
 
 on:
   push:
+    branches:
+      - canary
   pull_request:
 
 concurrency:
@@ -43,7 +45,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [18, 20]
+        node-version: [16, 18, 20]
     name: node ${{ matrix.node-version }}
     steps:
       - uses: actions/checkout@v4