Use release version of spring-security-release-plugin

Closes gh-1526

build.gradle

@@ -1,6 +1,6 @@
 plugins {
 	id "io.spring.convention.root"
-	id "io.spring.security.release" version "1.0.1-SNAPSHOT"
+	id "io.spring.security.release" version "1.0.1"
 }
 
 group = "org.springframework.security"

settings.gradle

@@ -1,9 +1,6 @@
 pluginManagement {
 	repositories {
 		gradlePluginPortal()
-		maven { url "https://repo.spring.io/release" }
-		maven { url "https://repo.spring.io/milestone" }
-		maven { url "https://repo.spring.io/snapshot" }
 	}
 }