fix(tauri-build): rerun if `TAURI_CONFIG` env var changes

.changes/build-rerun-if-config-var-change.md

@@ -0,0 +1,5 @@
+---
+"tauri-build": patch
+---
+
+Rerun build script if `TAURI_CONFIG` environment variable change.

core/tauri-build/src/lib.rs

@@ -154,6 +154,7 @@ pub fn try_build(attributes: Attributes) -> Result<()> {
   use cargo_toml::{Dependency, Manifest};
   use tauri_utils::config::{Config, TauriConfig};
 
+  println!("cargo:rerun-if-env-changed=TAURI_CONFIG");
   println!("cargo:rerun-if-changed=tauri.conf.json");
   #[cfg(feature = "config-json5")]
   println!("cargo:rerun-if-changed=tauri.conf.json5");