drop mongo 4.4 from CI (#1082)

Author: idoqo

.github/workflows/go.yml

@@ -23,16 +23,15 @@ jobs:
       fail-fast: false
       matrix:
         image:
-          - mongo:4.4
           - mongo:5.0
           - mongo:6.0
           - mongo:7.0
           - mongo:8.0
           - mongo:latest
-          - percona/percona-server-mongodb:4.4
           - percona/percona-server-mongodb:5.0
           - percona/percona-server-mongodb:6.0
           - percona/percona-server-mongodb:7.0
+          - percona/percona-server-mongodb:8.0
           - percona/percona-server-mongodb:latest
 
     runs-on: ubuntu-latest