Update jenkins/ath Docker tag to v5509 (#7720)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

ath.sh

@@ -6,7 +6,7 @@ set -o xtrace
 cd "$(dirname "$0")"
 
 # https://github.com/jenkinsci/acceptance-test-harness/releases
-export ATH_VERSION=5504.v485694f31cdf
+export ATH_VERSION=5509.v07855a_003fc1
 
 MVN='mvn -B -ntp -Pquick-build -am -pl war package'
 if [[ -n ${MAVEN_SETTINGS-} ]]; then