PHPLIB-858: Add MongoDB 6.0 to GitHub CI matrix (#934)

Author: aleksandr-rudo

.github/workflows/tests.yml

@@ -31,6 +31,16 @@ jobs:
         topology:
           - "server"
         include:
+          - os: "ubuntu-20.04"
+            php-version: "8.0"
+            mongodb-version: "6.0"
+            driver-version: "mongodb/mongo-php-driver@master"
+            topology: "replica_set"
+          - os: "ubuntu-20.04"
+            php-version: "8.0"
+            mongodb-version: "6.0"
+            driver-version: "mongodb/mongo-php-driver@master"
+            topology: "sharded_cluster"
           - os: "ubuntu-20.04"
             php-version: "8.0"
             mongodb-version: "5.0"