bicep: fix update script deps (#367554)

pkgs/by-name/bi/bicep/updater.sh

@@ -4,7 +4,7 @@
 set -eo pipefail
 cd "$(dirname "${BASH_SOURCE[0]}")"
 
-deps_file="$(realpath "./deps.nix")"
+deps_file="$(realpath "./deps.json")"
 new_version="$(curl -s "https://api.github.com/repos/azure/bicep/releases?per_page=1" | jq -r '.[0].name')"
 old_version="$(sed -nE 's/\s*version = "(.*)".*/\1/p' ./package.nix)"