Bump the dependencies group with 2 updates (#55)

* Bump the dependencies group with 2 updates

Bumps the dependencies group with 2 updates: [org.assertj:assertj-core](https://github.com/assertj/assertj) and [org.springframework.boot](https://github.com/spring-projects/spring-boot).


Updates `org.assertj:assertj-core` from 3.25.3 to 3.26.0
- [Release notes](https://github.com/assertj/assertj/releases)
- [Commits](assertj/assertj@assertj-build-3.25.3...assertj-build-3.26.0)

Updates `org.springframework.boot` from 3.2.5 to 3.3.0
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.2.5...v3.3.0)

---
updated-dependencies:
- dependency-name: org.assertj:assertj-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
- dependency-name: org.springframework.boot
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

* Update README.md

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Roger Viñas Alcon <roger.vinas@fastzink.com>

Author: dependabot[bot]

README.md

@@ -1,7 +1,7 @@
 [![CI](https://github.com/rogervinas/spring-immutable-configuration-properties/actions/workflows/gradle.yml/badge.svg?branch=master)](https://github.com/rogervinas/spring-immutable-configuration-properties/actions/workflows/gradle.yml)
 ![Java](https://img.shields.io/badge/Java-21-blue?labelColor=black)
 ![Kotlin](https://img.shields.io/badge/Kotlin-2.0.0-blue?labelColor=black)
-![SpringBoot](https://img.shields.io/badge/SpringBoot-3.2.5-blue?labelColor=black)
+![SpringBoot](https://img.shields.io/badge/SpringBoot-3.3.0-blue?labelColor=black)
 
 # Spring Immutable @ConfigurationProperties
 

build.gradle.kts

@@ -3,7 +3,7 @@ import org.gradle.api.tasks.testing.logging.TestLogEvent.*
 import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
-  id("org.springframework.boot") version "3.2.5"
+  id("org.springframework.boot") version "3.3.0"
   id("io.spring.dependency-management") version "1.1.5"
   kotlin("jvm") version "2.0.0"
   kotlin("plugin.spring") version "2.0.0"
@@ -21,7 +21,7 @@ dependencies {
   implementation("org.springframework.boot:spring-boot-starter")
   implementation("org.jetbrains.kotlin:kotlin-reflect")
   testImplementation("org.springframework.boot:spring-boot-starter-test")
-  testImplementation("org.assertj:assertj-core:3.25.3")
+  testImplementation("org.assertj:assertj-core:3.26.0")
 }
 
 tasks.withType<KotlinCompile> {