vapor: specify bin in test

SMillerDev · BrewTestBot · commit afb0b73af2a4 · 2023-02-08T14:25:00.000Z
diff --git a/Formula/vapor.rb b/Formula/vapor.rb
@@ -29,7 +29,7 @@ def install
   end
 
   test do
-    system "vapor", "new", "hello-world", "-n"
+    system bin/"vapor", "new", "hello-world", "-n"
     assert_predicate testpath/"hello-world/Package.swift", :exist?
   end
 end
