Bump gradle-bintray-plugin from 1.8.4 to 1.8.5 (ReactiveX#6951)

Bumps gradle-bintray-plugin from 1.8.4 to 1.8.5.

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

build.gradle

@@ -13,7 +13,7 @@ buildscript {
   ext.jacocoVersion = "0.8.4"
   ext.animalSnifferVersion = "1.5.0"
   ext.licenseVersion = "0.15.0"
-  ext.bintrayVersion = "1.8.4"
+  ext.bintrayVersion = "1.8.5"
   ext.jfrogExtractorVersion = "4.15.1"
   ext.bndVersion = "5.0.1"
   ext.checkstyleVersion = "8.26"