ci: upgrade MongoDB

Author: uniqueg

.github/workflows/checks.yml

@@ -24,7 +24,7 @@ jobs:
           ["3.11", "3.11-slim-bookworm"]
           ["3.12", "3.12-slim-bookworm"]
         ]
-        mongodb-version: ["4.2", "4.4", "5.0"]
+        mongodb-version: ["4.4", "5.0", "6.0", "7.0"]
         mongodb-port: [12345]
 
     steps: