fix: publish with bomFormat extension

No test yet, we probably want to revisit this in the future anyway (e.g.
to allow publishing both formats at the same time)

src/main/scala/com/github/sbt/sbom/BomSbtPlugin.scala

@@ -91,7 +91,7 @@ object BomSbtPlugin extends AutoPlugin {
         .value,
       bomConfigurations := Def.taskDyn(BomSbtSettings.bomConfigurationTask((configuration ?).value)).value,
       packagedArtifacts += {
-        Artifact(artifact.value.name, "cyclonedx", "xml", "cyclonedx") -> makeBom.value
+        Artifact(artifact.value.name, "cyclonedx", bomFormat.value, "cyclonedx") -> makeBom.value
       },
     )
   }