Bump versions.springBootVersion from 2.6.4 to 2.6.5 (#1820)

Bumps `versions.springBootVersion` from 2.6.4 to 2.6.5.

Updates `spring-boot-dependencies` from 2.6.4 to 2.6.5
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.6.4...v2.6.5)

Updates `spring-boot-gradle-plugin` from 2.6.4 to 2.6.5
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.6.4...v2.6.5)

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

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

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

dependencies.gradle

@@ -12,7 +12,7 @@ versions.aspectJVersion = "1.9.4"
 versions.apacheDsVersion = "2.0.0.AM26"
 versions.bouncyCastleVersion = "1.70"
 versions.hamcrestVersion = "2.2"
-versions.springBootVersion = "2.6.4"
+versions.springBootVersion = "2.6.5"
 versions.springSecurityJwtVersion = "1.1.1.RELEASE"
 versions.springSecurityOAuthVersion = "2.5.1.RELEASE"
 versions.springSecuritySamlVersion = "1.0.10.RELEASE"