Bump spring-boot.version from 2.7.5 to 2.7.6 (#187)

Bumps `spring-boot.version` from 2.7.5 to 2.7.6.

Updates `spring-boot-starter-test` from 2.7.5 to 2.7.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.5...v2.7.6)

Updates `spring-boot-dependencies` from 2.7.5 to 2.7.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.5...v2.7.6)

Updates `spring-boot-maven-plugin` from 2.7.5 to 2.7.6
- [Release notes](https://github.com/spring-projects/spring-boot/releases)
- [Commits](spring-projects/spring-boot@v2.7.5...v2.7.6)

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

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

wavefront-spring-boot-parent/pom.xml

@@ -19,7 +19,7 @@
 
   <properties>
     <java.version>1.8</java.version>
-    <spring-boot.version>2.7.5</spring-boot.version>
+    <spring-boot.version>2.7.6</spring-boot.version>
     <spring-cloud.version>2021.0.5</spring-cloud.version>
   </properties>