bump node test version

Author: jaredmixpanel

.github/workflows/node.js.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        node-version: [15.x]
+        node-version: [18.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
     steps:
     - name: Checkout
@@ -30,7 +30,7 @@ jobs:
     runs-on: macos-11
     strategy:
       matrix:
-        node-version: [15.x]
+        node-version: [18.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
@@ -58,7 +58,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        node-version: [15.x]
+        node-version: [18.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
     steps:
     - name: Checkout