Bump springBootVersion from 2.6.7 to 2.7.2

Bumps `springBootVersion` from 2.6.7 to 2.7.2.

Updates `spring-boot-gradle-plugin` from 2.6.7 to 2.7.2
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.6.7...v2.7.2)

Updates `spring-boot-dependencies` from 2.6.7 to 2.7.2
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.6.7...v2.7.2)

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

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

Author: dependabot[bot]

build.gradle

@@ -17,7 +17,7 @@
 buildscript {
     ext{
         //Plugins
-        springBootVersion = '2.6.7'
+        springBootVersion = '2.7.2'
         sonarqubeVersion = '3.4.0.2513'
         asciidoctorGradleVersion = "3.3.2"
         artifactoryVersion = '4.28.4'