fix: Guard update to v3 (#164)

Update-NoSkip: true
Update-Info: That is the last version for major `v2`. To update to `v3`, uninstall Githooks and install the new version.

githooks/cmd/installer/installer.go

@@ -18,6 +18,7 @@ import (
 	strs "github.com/gabyx/githooks/githooks/strings"
 	"github.com/gabyx/githooks/githooks/updates"
 	"github.com/gabyx/githooks/githooks/updates/download"
+	"github.com/hashicorp/go-version"
 
 	"github.com/mitchellh/go-homedir"
 	"github.com/spf13/cobra"
@@ -448,6 +449,13 @@ func runInstallDispatched(
 	if doUpdate {
 		tag = status.UpdateTag
 		commit = status.UpdateCommitSHA
+
+		maxVersion, _ := version.NewSemver("3.0.0")
+		if status.UpdateVersion.GreaterThanOrEqual(maxVersion) {
+			return false, cm.Error("Cannot update to version v3 and greater.\n" +
+				"To much changed. Uninstall Githooks completely and reinstall the new version.")
+		}
+
 	} else {
 		tag = status.LocalTag
 		commit = status.LocalCommitSHA