Spring4shell is missing SpringBoot update mention

[Eccenux]

1. You didn't mention patches in top section: https://www.lunasec.io/docs/blog/spring-rce-vulnerabilities/#rce-in-spring-core
2. Both core and Spring Boot was updated see: https://spring.io/blog/2022/03/31/spring-framework-rce-early-announcement

[freeqaz]

Thanks for catching this! I made a pass yesterday to add this information but apparently I missed these lines in the post. Fortunately, I've gotten more sleep now. With my head is on better today, I'll go get these changes in.

Thank you, @Eccenux !