Change Gradle Release Plugin branch to main

Author: Sven Obser

build.gradle.kts

@@ -1,7 +1,7 @@
 plugins {
     base
     kotlin("jvm") version "1.4.10" apply false
-    id("net.researchgate.release") version "2.6.0"
+    id("net.researchgate.release") version "2.8.1"
     id("io.codearte.nexus-staging") version "0.21.2"
 }
 
@@ -23,6 +23,10 @@ release {
     preTagCommitMessage = "[Gradle Release Plugin] Release version"
     tagCommitMessage = "[Gradle Release Plugin] Release version"
     newVersionCommitMessage = "[Gradle Release Plugin] New version"
+
+    git {
+        requireBranch = "main"
+    }
 }
 
 val mavenCentralUsername: String? by project
@@ -34,3 +38,7 @@ nexusStaging {
     numberOfRetries = 60
     delayBetweenRetriesInMillis = 10_000
 }
+
+fun net.researchgate.release.ReleaseExtension.git(
+    configure: net.researchgate.release.GitAdapter.GitConfig.() -> Unit
+) = (getProperty("git") as net.researchgate.release.GitAdapter.GitConfig).configure()