Revert "Update module github.com/go-git/go-git/v5 to v5.5.0"

[massongit]

https://github.com/dev-hato/deploy-webhook/actions/runs/3634816520/jobs/6133752550

 > [linux/amd64 base 6/6] RUN mapfile -t PLATFORM < <(echo "${TARGETPLATFORM}" | tr '/' ' ')     && CGO_ENABLED=0 GOOS=linux GOARCH=${PLATFORM[2]} go build -o deploy-webhook .:
#17 2.029 go: downloading github.com/skeema/knownhosts v1.1.0
#17 2.037 go: downloading github.com/xanzy/ssh-agent v0.3.2
#17 2.068 go: downloading golang.org/x/net v0.3.0
#17 2.337 go: downloading gopkg.in/warnings.v0 v0.1.2
#17 2.884 package deploy-hato-bot
#17 2.884 	imports github.com/go-git/go-git/v5
#17 2.884 	imports github.com/go-git/go-git/v5/config
#17 2.884 	imports github.com/go-git/go-git/v5/plumbing
#17 2.884 	imports github.com/go-git/go-git/v5/plumbing/hash
#17 2.884 	imports github.com/pjbgf/sha1cd/cgo: build constraints exclude all Go files in /go/pkg/mod/github.com/pjbgf/sha1cd@v0.2.0/cgo

上記エラーの根本解決は go-git/go-git#625 の反映を待つ必要がありますが、一旦 #367 をRevertすることで対応します。