Bump org.springframework.boot in /elixir-to-java/java-grpc-elixir-server

Bumps [org.springframework.boot](https://github.com/spring-projects/spring-boot) from 3.4.0 to 3.4.1.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.4.0...v3.4.1)

---
updated-dependencies:
- dependency-name: org.springframework.boot
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

elixir-to-java/java-grpc-elixir-server/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     ext {
         // https://mvnrepository.com/artifact/net.devh/grpc-server-spring-boot-starter
         grpcSpringBootVersion = '3.1.0.RELEASE'
-        springBootVersion = '3.4.0'
+        springBootVersion = '3.4.1'
         springDependencyManagementVersion = '1.1.7'
         // https://mvnrepository.com/artifact/com.google.protobuf/protobuf-bom
         protobufVersion = '4.29.2'