Update docker.io/jenkins/jenkins Docker tag to v2.508

Dockerfile

@@ -1,6 +1,6 @@
 # Dockerfile
 # Jenkins LTS as of 2023-05-03
-FROM  docker.io/jenkins/jenkins:2.507-jdk21
+FROM  docker.io/jenkins/jenkins:2.508-jdk21
 
 USER root
 

renovate.json

@@ -1,3 +1,18 @@
 {
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "platformAutomerge": true,
+  "packageRules": [
+    {
+      "matchUpdateTypes": [
+        "minor",
+        "patch",
+        "pin",
+        "digest"
+      ],
+      "ignoreTests": true,
+      "automerge": true,
+      "automergeType": "pr"
+    }
+  ]
+
 }