update benchpark version in dockerfile to specific tag #29

Job	Run time
setup_shared_matrix	4s
build_caliper_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.caliper, ghcr.io/l...	8m 7s
build_init_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.init, ghcr.io/llnl/re...	2m 58s
build_thicket_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.thicket, ghcr.io/l...	6m 48s
build_benchpark_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.benchpark, ghcr....	8m 3s
build_spawn_container (hpdc-2025, 2025-HPDC, linux, amd64, docker/Dockerfile.spawn, ghcr.io/llnl/...	8m 23s
	34m 23s

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