remove unmaintained `git-version` dependency?

[extrawurst]

based on https://github.com/sharkdp/bugreport/issues/2#issuecomment-1671072893:

I currently struggle with bugreport using git-version which seems highly unmaintained (last commit in 2021) and not moving forward to use syn2: https://github.com/fusion-engineering/rust-git-version/pull/20

I suggest we use a simple custom implementation to query the git version: https://stackoverflow.com/questions/43753491/include-git-commit-hash-as-string-into-rust-program

would you be open for a PR like this?

[sharkdp]

Completely missed this, sorry. Is this still relevant? Seems like there is a new git-version release?