Update integration tests

This commit updates Docker images used in all the integration tests. Additionally, it updates JDBC session repository Oracle integration tests to run unconditionally.

spring-session-samples/spring-session-sample-boot-redis/src/integration-test/java/sample/BootTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2014-2019 the original author or authors.
+ * Copyright 2014-2022 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -45,7 +45,7 @@ import org.springframework.test.web.servlet.htmlunit.webdriver.MockMvcHtmlUnitDr
 @SpringBootTest(webEnvironment = WebEnvironment.MOCK)
 class BootTests {
 
-	private static final String DOCKER_IMAGE = "redis:5.0.10";
+	private static final String DOCKER_IMAGE = "redis:7.0.4-alpine";
 
 	@Autowired
 	private MockMvc mockMvc;