Fix running backup and restore plugin (#709) #400

Job	Run time
build-activemq-docker-image	44s
build-geoserver-docker-image (2, 9.0.91-jdk17-temurin-focal, /opt/java/openjdk, 26, 1, https://so...	5m 5s
run-scenario-tests (gwc)	1m 40s
run-scenario-tests (login)	3m 36s
run-scenario-tests (stores)	2m 37s
run-scenario-tests (context)	1m 47s
run-scenario-tests (disk-quota)	2m 44s
run-scenario-tests (jdbconfig)	4m 42s
run-scenario-tests (libjpeg)	1m 37s
run-scenario-tests (backup_restore)	2m 57s
scan_image	2m 48s
push-internal-pr-images	0s
	30m 17s

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