fix(stream-server): remove useless vec! in build.rs

Clippy `-D warnings` rejected `vec![...]` for a fixed-size array literal
used only as `.iter().all(...)`. Replacing with a stack array unblocks
rust-ci and stream-ci jobs which both run `cargo clippy --all-targets`.

veza-stream-server/build.rs

@@ -6,13 +6,13 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Vérifier si protoc est disponible
     // Si les fichiers générés existent déjà, on peut continuer sans protoc
     let generated_dir = std::path::Path::new("src/generated");
-    let required_files = vec![
+    let required_files = [
         generated_dir.join("veza.stream.rs"),
         generated_dir.join("veza.common.auth.rs"),
     ];
-    
+
     let all_generated_exist = required_files.iter().all(|p| p.exists());
-    
+
     if all_generated_exist {
         // Les fichiers générés existent, on peut continuer sans protoc
         println!("cargo:warning=Using pre-generated protobuf files. protoc not required.");