Be quiet about the techtree update commit

techtree-manager/src/render.rs

@@ -93,6 +93,7 @@ pub async fn publish(ctx: &crate::Context, rendered: &RenderedTree) -> anyhow::R
         .arg("-C")
         .arg(&rendered.repo_dir)
         .arg("commit")
+        .arg("--quiet")
         .args(["-m", &format!("Updated techtree at {}", ctx.timestamp)])
         .success()
         .context("Failed to add generated graph files to git index")?;