remove temurin pin (#910)

Author: zeitlinger

.github/renovate.json5

@@ -34,12 +34,6 @@
         'open-telemetry/opentelemetry-java-instrumentation' // for logging-k8s-stdout-otlp-json/Dockerfile
       ],
     },
-    {
-      // intentionally using Java 11 in some examples
-      "matchPackageNames": ["eclipse-temurin"],
-      "matchUpdateTypes": ["major"],
-      "enabled": false
-    },
     {
       // Spring starter doesn't support Spring Boot 4 yet
       "matchPackageNames": ["org.springframework.boot:**"],