Log Message:
libgit2: updated to 1.8.2

v1.8.2

This release reverts a const-correctness change introduced in
v1.8.0 for the `git_commit_create` functions. We now retain the
const-behavior for the `commits` arguments from prior to v1.8.0.

This change was meant to resolve compatibility issues with bindings
and downstream users.

What's Changed

New features

* Introduce a stricter debugging allocator for testing

Bug fixes

* Fix constness issue

Build and CI improvements

* README: add experimental builds to ci table