MariaDB version in CAPI pipeline has yet another error message. Make test more generic. (#4255)

Author: svkrieger

spec/migrations/20250225132929_add_apps_file_based_service_binding_feature_columns_spec.rb

@@ -103,7 +103,7 @@
           it 'forbids setting both features to true' do
             run_migration
             expect { db[:apps].insert(guid: 'some_app', file_based_vcap_services_enabled: true, service_binding_k8s_enabled: true) }.to(raise_error do |error|
-              expect(error.inspect).to include('only_one_sb_feature_enabled', 'violate')
+              expect(error.inspect).to include('only_one_sb_feature_enabled')
             end)
           end