Clean up dependabot.yml (#948)

.github/dependabot.yml

@@ -1,34 +1,16 @@
+# https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+---
 version: 2
 updates:
-- package-ecosystem: maven
-  directory: "/"
-  schedule:
-    interval: weekly
-  open-pull-requests-limit: 10
-  ignore:
-  - dependency-name: jcl-over-slf4j
-    versions:
-    - ">= 0"
-  - dependency-name: log4j-over-slf4j
-    versions:
-    - ">= 0"
-  - dependency-name: org.jenkins-ci.main:jenkins-bom
-    versions:
-    - ">= 0"
-  - dependency-name: org.jenkins-ci.main:jenkins-core
-    versions:
-    - ">= 0"
-  - dependency-name: org.jenkins-ci.main:jenkins-war
-    versions:
-    - ">= 0"
-  - dependency-name: slf4j-api
-    versions:
-    - ">= 0"
-  - dependency-name: slf4j-jdk14
-    versions:
-    - ">= 0"
-  - dependency-name: javax.servlet:javax.servlet-api
-    versions:
-    - ">= 0"
-  - dependency-name: "jakarta.servlet:jakarta.servlet-api"
-    versions: [ ">=5.0.0" ]    
+  - package-ecosystem: maven
+    directory: "/"
+    schedule:
+      interval: weekly
+    open-pull-requests-limit: 10
+    ignore:
+      # TODO https://github.com/jenkinsci/plugin-pom/issues/936 delete when baseline is 2.459+ -->
+      - dependency-name: "jakarta.servlet:jakarta.servlet-api"
+        versions: [">=5.0.0"]
+      - dependency-name: "org.jenkins-ci.main:jenkins-bom"
+      - dependency-name: "org.jenkins-ci.main:jenkins-core"
+      - dependency-name: "org.jenkins-ci.main:jenkins-war"