Bump gradle-nexus-plugin from 2.3 to 2.3.1

Bumps [gradle-nexus-plugin](https://github.com/bmuschko/gradle-nexus-plugin) from 2.3 to 2.3.1.
- [Release notes](https://github.com/bmuschko/gradle-nexus-plugin/releases)
- [Changelog](https://github.com/bmuschko/gradle-nexus-plugin/blob/master/RELEASE_NOTES.md)
- [Commits](bmuschko/gradle-nexus-plugin@v2.3...v2.3.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

build.gradle

@@ -7,7 +7,7 @@ buildscript {
     dependencies {
         classpath "com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.5"
         classpath "com.netflix.nebula:gradle-extra-configurations-plugin:2.2.0"
-        classpath 'com.bmuschko:gradle-nexus-plugin:2.3'
+        classpath 'com.bmuschko:gradle-nexus-plugin:2.3.1'
         classpath "io.codearte.gradle.nexus:gradle-nexus-staging-plugin:0.8.0"
         classpath "io.github.groovylang.groovydoc:groovydoc-gradle-plugin:1.0.1"
     }