graylog: 2.4.4 -> 2.4.5 (#41686)

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

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

These checks were done:

- built on NixOS
- /nix/store/957p5ly7vbcn5rbzcsqz1fhwih4avkzh-graylog-2.4.5/bin/graylogctl passed the binary check.
- /nix/store/957p5ly7vbcn5rbzcsqz1fhwih4avkzh-graylog-2.4.5/bin/.graylogctl-wrapped passed the binary check.
- 2 of 2 passed binary check by having a zero exit code.
- 0 of 2 passed binary check by having the new version present in output.
- found 2.4.5 with grep in /nix/store/957p5ly7vbcn5rbzcsqz1fhwih4avkzh-graylog-2.4.5
- directory tree listing: https://gist.github.com/b91cd0e75ee5014ab3b6ef789d72127d
- du listing: https://gist.github.com/36db46a4bf59057799ab10aa9dca0f9b