build(deps): bump versions.springBootVersion from 3.5.5 to 3.5.6 (#3625)

Bumps `versions.springBootVersion` from 3.5.5 to 3.5.6.

Updates `org.springframework.boot:spring-boot-dependencies` from 3.5.5 to 3.5.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.5...v3.5.6)

Updates `org.springframework.boot:spring-boot-gradle-plugin` from 3.5.5 to 3.5.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v3.5.5...v3.5.6)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-dependencies
  dependency-version: 3.5.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.springframework.boot:spring-boot-gradle-plugin
  dependency-version: 3.5.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

dependencies.gradle

@@ -8,7 +8,7 @@ versions.apacheDsVersion = "2.0.0.AM27"
 versions.bouncyCastleFipsVersion = "2.1.1"
 versions.bouncyCastlePkixFipsVersion = "2.1.9"
 versions.bouncyCastleTlsFipsVersion = "2.1.20"
-versions.springBootVersion = "3.5.5"
+versions.springBootVersion = "3.5.6"
 versions.tomcatCargoVersion = "10.1.46"
 versions.guavaVersion = "33.4.8-jre"
 versions.seleniumVersion = "4.35.0"