waitForActiveShards parsing fails for value "all"

Parsing is done in [TypeUtils#waitForActiveShardsCount](https://github.com/spring-projects/spring-data-elasticsearch/blob/df79368299167cdc5752fddd393e69ab2b881ede/src/main/java/org/springframework/data/elasticsearch/client/elc/TypeUtils.java#L434). There is a branch for handling `all`:

```java
"all".equals(value.toUpperCase())
```

I believe this should be lowercase.