Upgrade to Reactor 2020.0.4

Closes gh-981

Signed-off-by: Rossen Stoyanchev <[email protected]>

Author: rstoyanchev

build.gradle

@@ -32,7 +32,7 @@ subprojects {
     apply plugin: 'io.spring.dependency-management'
     apply plugin: 'com.github.sherter.google-java-format'
 
-    ext['reactor-bom.version'] = '2020.0.0'
+    ext['reactor-bom.version'] = '2020.0.4'
     ext['logback.version'] = '1.2.3'
     ext['netty-bom.version'] = '4.1.59.Final'
     ext['netty-boringssl.version'] = '2.0.36.Final'