JIRA: https://jira.spring.io/browse/INT-3581 Move schemas to 4.2. Add `selector-expression` to `<wire-tap/>`. INT-3781: Fix What's New Bump Namespace Version to 4.2
JIRA: https://jira.spring.io/browse/INT-3581 Move schemas to 4.2. Add `selector-expression` to `<wire-tap/>`. INT-3781: Fix What's New Bump Namespace Version to 4.2