Bump org.sparkle-project:sparkle from 2.6.3 to 2.8.0

Bumps org.sparkle-project:sparkle from 2.6.3 to 2.8.0.

---
updated-dependencies:
- dependency-name: org.sparkle-project:sparkle
  dependency-version: 2.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

osx/pom.xml

@@ -115,7 +115,7 @@
                                             <groupId>org.sparkle-project</groupId>
                                             <artifactId>sparkle</artifactId>
                                             <type>zip</type>
-                                            <version>2.6.3</version>
+                                            <version>2.8.0</version>
                                         </artifactItem>
                                     </artifactItems>
                                     <outputDirectory>${project.build.directory}</outputDirectory>