Debian package uninstallable on Bookworm due to missing dependencies

[cdhowie]

The Debian package has the following two dependencies that cannot be satisfied on Debian Bookworm (the current stable release):

• libssl1.1 | libssl1.0.2 | libssl1.0.1 | libssl1.0.0 | libssl0.9.8
• libicu70 | libicu69 | libicu68 | libicu67 | libicu66 | libicu65 | libicu64 | libicu63 | libicu62 | libicu61 | libicu60 | libicu59 | libicu58 | libicu57 | libicu56 | libicu55 | libicu54 | libicu53 | libicu52

Bookworm provides libssl3 and libicu72 only.

[cdhowie]

Note that I would be happy to submit a PR for this and #91 but I cannot find any tooling or build scripts to build the Debian package in the code repository, so I'm unsure how the packages were built in the first place or how I might submit these fixes.