Update buildkite plugin junit-annotate to v2.5.0

Author: elastic-renovate-prod[bot]

.buildkite/pipeline.yml

@@ -25,7 +25,7 @@ steps:
       provider: "gcp"
       image: family/core-ubuntu-2204
     plugins:
-      - junit-annotate#v2.4.1:
+      - junit-annotate#v2.5.0:
           artifacts: "junit-output/junit-*.xml"
           job-uuid-file-pattern: "junit-(.*).xml"
           fail-build-on-error: true