Use new maven central publishing urls (#456)

Author: runningcode

fladle-plugin/build.gradle.kts

@@ -66,8 +66,8 @@ publishing {
   repositories {
     repositories {
       maven {
-        val releasesRepoUrl = uri("https://oss.sonatype.org/service/local/staging/deploy/maven2/")
-        val snapshotsRepoUrl = uri("https://oss.sonatype.org/content/repositories/snapshots/")
+        val releasesRepoUrl = uri("https://central.sonatype.com/api/v1/publisher/deployments/upload/")
+        val snapshotsRepoUrl = uri("https://central.sonatype.com/repository/maven-snapshots/")
         url = if (isReleaseBuild) releasesRepoUrl else snapshotsRepoUrl
         credentials {
           username = sonatypeUsername