Update jenkins/ath Docker tag to v5497 (#7617)

Co-authored-by: Nrenovate[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=5478.vb_b_cd04943676
+export ATH_VERSION=5497.vca_4a_876045ce
 
 # TODO use Artifactory proxy?