build(deps): Bump spring-boot-starter-validation from 2.5.5 to 2.6.0

Bumps [spring-boot-starter-validation](https://github.com/spring-projects/spring-boot) from 2.5.5 to 2.6.0.
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.5.5...v2.6.0)

---
updated-dependencies:
- dependency-name: org.springframework.boot:spring-boot-starter-validation
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -52,7 +52,7 @@ configurations {
 
 dependencies {
     embed 'commons-io:commons-io:2.11.0'
-    embed 'org.springframework.boot:spring-boot-starter-validation:2.5.5'
+    embed 'org.springframework.boot:spring-boot-starter-validation:2.6.0'
     embed 'org.springframework.boot:spring-boot-starter-web:2.5.5'
     embed 'org.springframework.boot:spring-boot-starter-log4j2:2.5.5'
     embed 'org.apache.logging.log4j:log4j-web:2.14.1'