Update dependency libgit2/libgit2 to v1.7.1

This MR contains the following updates:

Package	Type	Update	Change
libgit2/libgit2	ironbank-github	patch	v1.7.0 -> v1.7.1

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Release Notes

libgit2/libgit2

v1.7.1: libgit2 v1.7.1

Compare Source

v1.7.1

What's Changed

Bug fixes

• proxy: Return an error for invalid proxy URLs instead of crashing. by @​lrm29 in https://github.com/libgit2/libgit2/pull/6597
• ssh: fix known_hosts leak in _git_ssh_setup_conn by @​steven9724 in https://github.com/libgit2/libgit2/pull/6599
• repository: make cleanup safe for re-use with grafts by @​carlosmn in https://github.com/libgit2/libgit2/pull/6600
• fix: Add missing include for oidarray. by @​dvzrv in https://github.com/libgit2/libgit2/pull/6608
• Revert "CMake: Search for ssh2 instead of libssh2." by @​ethomson in https://github.com/libgit2/libgit2/pull/6619

Compatibility improvements

• stransport: macOS: replace errSSLNetworkTimeout, with hard-coded value by @​mascguy in https://github.com/libgit2/libgit2/pull/6610

New Contributors

• @​dvzrv made their first contribution in https://github.com/libgit2/libgit2/pull/6608
• @​steven9724 made their first contribution in https://github.com/libgit2/libgit2/pull/6599

Full Changelog: https://github.com/libgit2/libgit2/compare/v1.7.0...v1.7.1

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