build(deps): update pygit2 requirement from <1.6.0,>=1.2.1 to >=1.2.1,<1.9.0

[dependabot]

Updates the requirements on pygit2 to permit the latest version.

Changelog

Sourced from pygit2's changelog.

1.8.0 (2022-02-04)

• Rename RemoteCallbacks.progress(...) callback to .sideband_progress(...) [#1120](https://github.com/libgit2/pygit2/issues/1120) <https://github.com/libgit2/pygit2/pull/1120>_

• New Repository.merge_base_many(...) and Repository.merge_base_octopus(...) [#1112](https://github.com/libgit2/pygit2/issues/1112) <https://github.com/libgit2/pygit2/pull/1112>_

• New Repository.listall_stashes() [#1117](https://github.com/libgit2/pygit2/issues/1117) <https://github.com/libgit2/pygit2/pull/1117>_

• Code cleanup [#1118](https://github.com/libgit2/pygit2/issues/1118) <https://github.com/libgit2/pygit2/pull/1118>_

Backward incompatible changes:

• The RemoteCallbacks.progress(...) callback has been renamed to RemoteCallbacks.sideband_progress(...). This matches the documentation, but may break existing code that still uses the old name.

1.7.2 (2021-12-06)

• Universal wheels for macOS [#1109](https://github.com/libgit2/pygit2/issues/1109) <https://github.com/libgit2/pygit2/pull/1109>_

1.7.1 (2021-11-19)

• New Repository.amend_commit(...) [#1098](https://github.com/libgit2/pygit2/issues/1098) <https://github.com/libgit2/pygit2/pull/1098>_

• New Commit.message_trailers [#1101](https://github.com/libgit2/pygit2/issues/1101) <https://github.com/libgit2/pygit2/pull/1101>_

• Windows wheels for Python 3.10 [#1103](https://github.com/libgit2/pygit2/issues/1103) <https://github.com/libgit2/pygit2/pull/1103>_

• Changed: now DiffDelta.is_binary returns None if the file data has not yet been loaded, cf. [#962](https://github.com/libgit2/pygit2/issues/962) <https://github.com/libgit2/pygit2/issues/962>_

• Document Repository.get_attr(...) and update theme [#1017](https://github.com/libgit2/pygit2/issues/1017) <https://github.com/libgit2/pygit2/issues/1017>_ [#1105](https://github.com/libgit2/pygit2/issues/1105) <https://github.com/libgit2/pygit2/pull/1105>_

1.7.0 (2021-10-08)

... (truncated)

Commits

• 822a551 Release 1.8.0
• 977416d Update changelog
• 8dd09cb Fix _sideband_progress_cb never calls RemoteCallbacks.sideband_progress
• 73d78d3 Clean up obsolete function declarations in C headers
• d0bd037 Prefer Object.id over .oid in docs and tests
• cad724e Document Repository.listall_stashes
• 1205eb7 Add Stash, Repository.listall_stashes
• 6fecb61 Fixed wrong return value from merge_base_xxx
• be95c2d Fixed memory leak and avoided code reuse via static function merge_base_xxx.
• 9d06bbf Added Repository.merge_base_many and Repository.merge_base_octopus plus docs ...
• Additional commits viewable in compare view

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[codecov-commenter]

Codecov Report

Merging #63 (d65dc8d) into master (04655f8) will increase coverage by 1.52%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #63      +/-   ##
==========================================
+ Coverage   50.94%   52.47%   +1.52%     
==========================================
  Files         123      123              
  Lines        7718     7718              
  Branches     1042     1042              
==========================================
+ Hits         3932     4050     +118     
+ Misses       3632     3494     -138     
- Partials      154      174      +20     

Impacted Files	Coverage Δ
benchbuild/environments/service_layer/ensure.py	63.63% <0.00%> (-18.19%)	⬇️
benchbuild/environments/service_layer/ui.py	57.14% <0.00%> (-14.29%)	⬇️
...enchbuild/environments/service_layer/messagebus.py	75.00% <0.00%> (-2.50%)	⬇️
benchbuild/environments/adapters/common.py	63.63% <0.00%> (-1.82%)	⬇️
benchbuild/environments/entrypoints/cli.py	85.52% <0.00%> (+1.31%)	⬆️
benchbuild/utils/download.py	22.56% <0.00%> (+4.87%)	⬆️
benchbuild/environments/domain/model.py	89.74% <0.00%> (+5.98%)	⬆️
...chbuild/environments/service_layer/unit_of_work.py	76.64% <0.00%> (+5.98%)	⬆️
benchbuild/environments/service_layer/handlers.py	86.79% <0.00%> (+16.98%)	⬆️
benchbuild/environments/adapters/buildah.py	70.98% <0.00%> (+17.61%)	⬆️
... and 3 more

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[dependabot]

Superseded by #66.