feat: always install latest version of rosetta_update_checks

tasks/install_test_scripts.yml

@@ -48,7 +48,6 @@
     # runs all the pre-/post-upgrade tests on Rosetta and SubApp servers
     - dest: "rosetta_update_test/"
       repo: "git@{{ vault_slub_git_repo_fqdn }}:slub-digitalpreservation/rosetta_update_test.git"
-      version: "c61918f9cbcba28b1ac0490055fe3fa69467eaee"
     # runs the Exit Strategy script to build an emergency database
     - dest: "rosettaExitStrategy/"
       repo: "git@{{ vault_slub_git_repo_fqdn }}:slub-digitalpreservation/rosettaExitStrategy.git"