Update gradle enterprise setup (#251)

* Bumped Gradle enterprise to 3.16 and CCUD plugins to 1.12.1

* Set remote build cache to push only if authenticated

* Added Revved up by  Develocity badge

README.md

@@ -4,6 +4,7 @@
 [![ci](https://github.com/openrewrite/rewrite-gradle-plugin/actions/workflows/ci.yml/badge.svg)](https://github.com/openrewrite/rewrite-gradle-plugin/actions/workflows/ci.yml)
 [![Gradle Plugin Portal](https://img.shields.io/maven-metadata/v/https/plugins.gradle.org/m2/org.openrewrite/plugin/maven-metadata.xml.svg?label=gradlePluginPortal)](https://plugins.gradle.org/plugin/org.openrewrite.rewrite)
 [![Apache 2.0](https://img.shields.io/github/license/openrewrite/rewrite-gradle-plugin.svg)](https://www.apache.org/licenses/LICENSE-2.0)
+[![Revved up by Develocity](https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A)](https://ge.openrewrite.org/scans)
 [![Contributing Guide](https://img.shields.io/badge/Contributing-Guide-informational)](https://github.com/openrewrite/.github/blob/main/CONTRIBUTING.md)
 
 ## What is this?

settings.gradle.kts

@@ -4,8 +4,8 @@ include("plugin")
 include("metrics")
 
 plugins {
-    id("com.gradle.enterprise") version "3.12.3"
-    id("com.gradle.common-custom-user-data-gradle-plugin") version "1.8.2"
+    id("com.gradle.enterprise") version "3.16"
+    id("com.gradle.common-custom-user-data-gradle-plugin") version "1.12.1"
 }
 
 gradleEnterprise {
@@ -15,7 +15,9 @@ gradleEnterprise {
     buildCache {
         remote(HttpBuildCache::class) {
             url = uri("https://ge.openrewrite.org/cache/")
-            isPush = isCiServer
+            // Check access key presence to avoid build cache errors on PR builds when access key is not present
+            val accessKey = System.getenv("GRADLE_ENTERPRISE_ACCESS_KEY")
+            isPush = isCiServer && !accessKey.isNullOrEmpty()
         }
     }