add different mongodb version

Author: zookzook

.github/workflows/mongodb_driver.yml

@@ -13,7 +13,7 @@ jobs:
 
     strategy:
       matrix:
-        mongodb-version: ["4.2", "4.4", "5.3", "6.0"]
+        mongodb-version: ["4.2", "4.4", "5.0", "6.0"]
 
     runs-on: ubuntu-latest
     steps:

README.md

@@ -10,7 +10,7 @@
 
 ## Features
 
-- supports MongoDB versions 3.2, 3.4, 3.6, 4.x, 5.x, 6.x
+- supports MongoDB versions 4.x, 5.x, 6.x
 - connection pooling ([through DBConnection 2.x](https://github.com/elixir-ecto/db_connection))
 - streaming cursors
 - performant ObjectID generation