updates to the Spring Tools 4 for Eclipse distribution

• updated to Eclipse 2023-09 release (new and noteworthy)

important highlights

• (Spring Boot): 5x-10x faster Java Reconciling support to show Spring specific validations re-built from the ground up tuned for high performance to work seamlessly in large code bases
• (Eclipse): No more rogue "Boot Language Server" jobs, forever calculating completion proposals and other stuck Java/Spring tooling features

all fixes and improvements in detail

• (Spring Boot) fixed: Performance of Reconciling Spring Java (#1068)
• (Spring Boot) fixed: Spring Language Server hangs forever (#1075)
• (Spring Boot) fixed: Spring Boot Validations Builder hung seemingly forever (#1103)
• (Spring Boot) fixed: [new validation engine] remove old open-rewrite based validation code (#1084)
• (Spring Boot) fixed: [new validation engine] convert reconcilers to new validation engine (#1085)
• (Spring Boot) fixed: [new validation engine] take preference changes into account beyond open files (#1083)
• (Spring Boot) fixed: Incorrect MISSING_CONFIGURATION_ANNOTATION warning in vscode (#1100)
• (Spring Boot) fixed: quick fix to remove unnecessary @Autowired appears twice (#1106)
• (Spring Boot) fixed: quick fix to convert '@RequestMapping' to '@GetMapping' fails in VSCode (#1105)
• (Eclipse) fixed: Menu Item for "Run Configurations" should be "Spring Boot DevTools Client" (#1096)
• (VSCode) fixed: Change the scope of spring-boot.ls.java.home to machine-overridable (#1094)

known issues

• (Eclipse): It still seems to happen sometimes that resource files like the application.properties do not get copied correctly into the target folders after changing those files, sometimes those resource files disappear from the target folder entirely. We are investigating the problem and will provide updates and workaround on issue #929 or M2E issue #1511.