build(deps): bump org.jboss.arquillian.extension:arquillian-drone-bom

Bumps [org.jboss.arquillian.extension:arquillian-drone-bom](https://github.com/arquillian/arquillian-extension-drone) from 3.0.0-alpha.7 to 3.0.0-alpha.8.
- [Release notes](https://github.com/arquillian/arquillian-extension-drone/releases)
- [Commits](arquillian/arquillian-extension-drone@3.0.0-alpha.7...3.0.0-alpha.8)

---
updated-dependencies:
- dependency-name: org.jboss.arquillian.extension:arquillian-drone-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -56,7 +56,7 @@
     <!-- Arquillian -->
     <version.servlet_api>3.0.1</version.servlet_api>
     <version.arquillian_core>1.8.0.Final</version.arquillian_core>
-    <version.arquillian_drone>3.0.0-alpha.7</version.arquillian_drone>
+    <version.arquillian_drone>3.0.0-alpha.8</version.arquillian_drone>
     <version.arquillian_jacoco>1.1.0</version.arquillian_jacoco>
 
     <version.littleproxy>2.0.22</version.littleproxy>