ci: use new test rootfs image

Author: thazhemadam

.buildkite/run_benchmark.yml

@@ -19,8 +19,8 @@ steps:
       - JuliaCI/julia#v1:
           version: "1.10"
       - staticfloat/sandbox:
-          rootfs_url: "https://github.com/thazhemadam/openmodelica-rootfs-image/releases/download/v1.23.0/rootfs-openmodelica-v1.23.0.amd64.tar.gz"
-          rootfs_treehash: "82970243dc4f188e599a976abc20951f4aba2912"
+          rootfs_url: "https://github.com/thazhemadam/SciMLBenchmarks-rootfs-image/releases/download/test-gfortran/rootfs-script.amd64.tar.gz"
+          rootfs_treehash: "1ca61dc27d89849ed03af6c9babdbd4042ddd4f2"
           uid: 1000
           gid: 1000
           workspaces: