Remove mongodb version

Author: rsaladocid

.github/workflows/nodejs.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         node-version: [8.x, 10.x, 12.x]
-        mongodb-version: [3.6, 4.0, 4.2]
+        mongodb-version: [4.0, 4.2]
 
     steps:
       - uses: actions/checkout@v1