chore(deps): update git2 to use libgit2 1.9 #2304

Job	Run time
Integration tests (macos-latest)	2m 9s
Rustfmt	8s
Code coverage	2m 48s
Clippy	43s
Integration tests (ubuntu-latest)	2m 10s
Unit tests (macos-latest, aarch64-apple-darwin, false)	2m 36s
Unit tests (macos-13, x86_64-apple-darwin, false)	5m 40s
Unit tests (windows-latest, x86_64-pc-windows-msvc, false)	6m 3s
Unit tests (ubuntu-latest, x86_64-unknown-linux-gnu, false)	2m 27s
Unit tests (ubuntu-latest, x86_64-unknown-linux-musl, true)	2m 56s
Unit tests (ubuntu-latest, i686-unknown-linux-gnu, true)	2m 39s
Unit tests (ubuntu-latest, arm-unknown-linux-gnueabihf, true)	3m 14s
Unit tests (ubuntu-latest, aarch64-unknown-linux-gnu, true)	3m 26s
	36m 59s

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