Fix whitespace

Issue gh-1946

spring-session-data-redis/src/test/java/org/springframework/session/data/redis/config/annotation/web/http/RedisHttpSessionConfigurationMockTests.java

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package org.springframework.session.data.redis.config.annotation.web.http;
 
 import org.junit.jupiter.api.BeforeEach;