Fix compatibility with the latest SF

* Upgrade Spring dependencies to the latest SNAPSHOTs
* Fix tests to verify against stack traces: the message
of the `NestedRuntimeException`  does not include the nested exception information.
Related to https://github.com/spring-projects/spring-framework/issues/25162
* Fix `JdbcMessageStore` and `DefaultLockRepository` to rely on the `DataIntegrityViolationException`
instead of only its `DuplicateKeyException` extension.
This is the current behavior of the SQL errors translation
* Disable `WebFluxDslTests.testValidation()` - doesn't subscribe to the reply somehow...
* Refine `SimplePool.PoolSemaphore.reducePermits()`

spring-integration-rsocket/src/test/java/org/springframework/integration/rsocket/outbound/RSocketOutboundGatewayIntegrationTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2019-2020 the original author or authors.
+ * Copyright 2019-2022 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.
@@ -475,7 +475,7 @@ public class RSocketOutboundGatewayIntegrationTests {
 				.extracting(Message::getPayload)
 				.isInstanceOf(MessageHandlingException.class)
 				.satisfies((ex) -> assertThat((Exception) ex)
-						.hasMessageContaining(
+						.hasStackTraceContaining(
 								"ApplicationErrorException (0x201): No handler for destination 'invalid'"));
 
 		disposable.dispose();