chore(deps): bump spring-boot.version from 2.3.4.RELEASE to 2.5.4

Bumps `spring-boot.version` from 2.3.4.RELEASE to 2.5.4.

Updates `spring-boot-dependencies` from 2.3.4.RELEASE to 2.5.4
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.3.4.RELEASE...v2.5.4)

Updates `spring-boot-maven-plugin` from 2.3.4.RELEASE to 2.5.4
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.3.4.RELEASE...v2.5.4)

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

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

Author: dependabot[bot]

pom.xml

@@ -51,7 +51,7 @@
         <javapoet.version>1.13.0</javapoet.version>
         <assertj.version>3.20.2</assertj.version>
         <awaitility.version>4.1.0</awaitility.version>
-        <spring-boot.version>2.3.4.RELEASE</spring-boot.version>
+        <spring-boot.version>2.5.4</spring-boot.version>
 
         <fmt-maven-plugin.version>2.11</fmt-maven-plugin.version>
         <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version>