Bump io.smallrye.reactive:mutiny from 2.7.0 to 2.8.0 (#43)

Bumps [io.smallrye.reactive:mutiny](https://github.com/smallrye/smallrye-mutiny) from 2.7.0 to 2.8.0.
- [Release notes](https://github.com/smallrye/smallrye-mutiny/releases)
- [Commits](smallrye/smallrye-mutiny@2.7.0...2.8.0)

---
updated-dependencies:
- dependency-name: io.smallrye.reactive:mutiny
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pom.xml

@@ -76,7 +76,7 @@
         <dependency>
             <groupId>io.smallrye.reactive</groupId>
             <artifactId>mutiny</artifactId>
-            <version>2.7.0</version>
+            <version>2.8.0</version>
         </dependency>
         <dependency>
             <groupId>io.grpc</groupId>