[release/v1.30.x] Prepare release 1.30.1 (#5814)

Author: opentelemetrybot

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## Version 1.30.1 (2023-09-11)
 
 * Fix autoconfigure bug creating multiple `PrometheusHttpServer` instances with same port
   ([#5911](https://github.com/open-telemetry/opentelemetry-java/pull/5811))

version.gradle.kts

@@ -1,7 +1,7 @@
 val snapshot = false
 
 allprojects {
-  var ver = "1.30.0"
+  var ver = "1.30.1"
   val release = findProperty("otel.release")
   if (release != null) {
     ver += "-" + release