Add missing } to publish.gradle

This was missed in https://github.com/androidx/media/commit/47349b8c4bd69415da8895061be71ef748c4a2d3

#minor-release

PiperOrigin-RevId: 504548659

publish.gradle

@@ -46,6 +46,7 @@ afterEvaluate {
                             project.objects.named(DocsType, DocsType.SOURCES))
                         variant.outgoing.artifact(androidSourcesJar)
                         components.release.addVariantsFromConfiguration(variant) {}
+                    }
                     pom {
                         name =
                             findProperty('releaseName')