babeltrace: 1.5.4 -> 1.5.5

Semi-automatic update generated by https://github.com/ryantm/nix-update tools.

This update was made based on information from https://repology.org/metapackage/babeltrace/versions.

These checks were done:

- built on NixOS
- ran `/nix/store/yhd43sy0rj5fr0gwh298l959b7bmcsh8-babeltrace-1.5.5/bin/babeltrace -h` got 0 exit code
- ran `/nix/store/yhd43sy0rj5fr0gwh298l959b7bmcsh8-babeltrace-1.5.5/bin/babeltrace --help` got 0 exit code
- ran `/nix/store/yhd43sy0rj5fr0gwh298l959b7bmcsh8-babeltrace-1.5.5/bin/babeltrace -h` and found version 1.5.5
- ran `/nix/store/yhd43sy0rj5fr0gwh298l959b7bmcsh8-babeltrace-1.5.5/bin/babeltrace --help` and found version 1.5.5
- ran `/nix/store/yhd43sy0rj5fr0gwh298l959b7bmcsh8-babeltrace-1.5.5/bin/babeltrace-log -h` got 0 exit code
- ran `/nix/store/yhd43sy0rj5fr0gwh298l959b7bmcsh8-babeltrace-1.5.5/bin/babeltrace-log -h` and found version 1.5.5
- found 1.5.5 with grep in /nix/store/yhd43sy0rj5fr0gwh298l959b7bmcsh8-babeltrace-1.5.5
- directory tree listing: https://gist.github.com/d849a2026946a7542bc3e2e6a586d713