Update tests to use mariadb 10.3

Update version of mariadb used by tests since this is our minimum required version.

.github/workflows/ci.yaml

@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         php: [8.2, 8.3]
-        database: ["mariadb:10.2", "mysql:8"]
+        database: ["mariadb:10.3", "mysql:8"]
     services:
       database:
         image: ${{ matrix.database }}