SpringBoot Downgraded Maven Javadoc Plugin to v3.8.0 from v3.10.0

Downgraded Maven Javadoc Plugin to v3.8.0 from v3.10.0 as per - issue reported #42401 - MJAVADOC-812 https://issues.apache.org/jira/browse/MJAVADOC-812

Revert of commit https://github.com/spring-projects/spring-boot/commit/53554278bcb3ba43f11d9829e9277a711d4e01f6

Comment From: wilkinsona

Thanks for the PR, but we don't want to do this yet, if at all. Also, as described in the PR template, we don't accept contributions for one-line dependency version changes. Hopefully we'll be able to upgrade to 3.10.1 before Spring Boot 3.4.0-RC1 is released in a month's time. If we need to roll back to 3.8, we'll do that in October shortly before the RC1 release.