Update Spring Framework to a Jakarta EE 9 supported version

This rule flags any spring-core-X.X.X.RELEASE.jar/META-INF/MANIFEST.MF file with an Implementation-Version value lower than 6.

The minimum version of Spring Framework that is supported on Jakarta EE 9 is Spring v6. Older versions of Spring Framework will not be supported and will be flagged by this rule.

For more information on the Jakarta EE 9 updates to Spring Framework, see Support for Jakarta EE 9 on Github.