Fix: Adjust build matrix

Author: localheinz

.github/workflows/integrate.yaml

@@ -555,15 +555,15 @@ jobs:
             php-version: "8.3"
             dependencies: "lowest"
 
-          - phpunit-version: "8.5.40"
+          - phpunit-version: "8.5.19"
             php-version: "8.3"
             dependencies: "highest"
 
           - phpunit-version: "8.5.40"
             php-version: "8.4"
             dependencies: "lowest"
 
-          - phpunit-version: "8.5.19"
+          - phpunit-version: "8.5.40"
             php-version: "8.4"
             dependencies: "highest"