Fix HDM test base version after MainNet upgrade (#3427)

Part of DACH-NY/canton-network-internal#2868

[static]

Signed-off-by: Martin Florian <[email protected]>

Author: martinflorian-da

build-tools/find_latest_hard_migration_base_version.sh

@@ -8,7 +8,5 @@
 
 set -euo pipefail
 
-# TODO(DACH-NY/canton-network-internal#2179) revert to normal once MainNet is on 0.5.x
-# latest_release=$(cat "$SPLICE_ROOT/LATEST_RELEASE")
-# echo "release-line-${latest_release}"
-echo "release-line-0.4.25"
+latest_release=$(cat "$SPLICE_ROOT/LATEST_RELEASE")
+echo "release-line-${latest_release}"