tests: Fix typo

Signed-off-by: Marcel Klehr <mklehr@gmx.net>

Author: marcelklehr

.github/workflows/integration-test.yml

@@ -548,11 +548,11 @@ jobs:
         exclude:
           - server-versions: stable30
             file-deletion-method: os
-            database: pgsql
+            databases: pgsql
             php-versions: 8.1
           - server-versions: stable31
             file-deletion-method: os
-            database: pgsql
+            databases: pgsql
             php-versions: 8.1