Bump quarkus-github-app.version from 2.7.0 to 2.8.0

Bumps `quarkus-github-app.version` from 2.7.0 to 2.8.0.

Updates `io.quarkiverse.githubapp:quarkus-github-app` from 2.7.0 to 2.8.0
- [Release notes](https://github.com/quarkiverse/quarkus-github-app/releases)
- [Commits](quarkiverse/quarkus-github-app@2.7.0...2.8.0)

Updates `io.quarkiverse.githubapp:quarkus-github-app-testing` from 2.7.0 to 2.8.0
- [Release notes](https://github.com/quarkiverse/quarkus-github-app/releases)
- [Commits](quarkiverse/quarkus-github-app@2.7.0...2.8.0)

---
updated-dependencies:
- dependency-name: io.quarkiverse.githubapp:quarkus-github-app
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: io.quarkiverse.githubapp:quarkus-github-app-testing
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

pom.xml

@@ -24,7 +24,7 @@
         <version.formatter.plugin>2.24.1</version.formatter.plugin>
         <version.impsort.plugin>1.4.1</version.impsort.plugin>
 
-        <quarkus-github-app.version>2.7.0</quarkus-github-app.version>
+        <quarkus-github-app.version>2.8.0</quarkus-github-app.version>
         <glob.version>0.9.0</glob.version>
         <build-reporter.version>3.9.6</build-reporter.version>
         <assertj.version>3.26.3</assertj.version>