Run every PHP versions with a single MongoDB version

Author: GromNaN

.github/workflows/continuous-integration.yml

@@ -26,8 +26,6 @@ jobs:
           - "8.5"
         mongodb-version:
           - "8.0"
-          - "7.0"
-          - "6.0"
         driver-version:
           - "stable"
         topology:
@@ -39,6 +37,11 @@ jobs:
         proxy:
           - "lazy-ghost"
         include:
+          # Older MongoDB versions
+          - php-version: 8.1
+            mongodb-version: 7.0
+          - php-version: 8.1
+            mongodb-version: 6.0
           # Test against lowest dependencies
           - dependencies: "lowest"
             php-version: "8.1"