fix: read exit code of bun test in test runner

this will avoid duplicate error output

src/testRunner.ts

@@ -23,6 +23,7 @@ const positionalArgs = Object.entries(args)
 console.log(formatCmd(args["dbCommand"]));
 const dbProcess = $({ quote: (arg) => arg })`${args["dbCommand"]}`.nothrow();
 
+let exitCode = 0;
 try {
   $.env = {
     ...getTestEnvVariables(),
@@ -31,10 +32,13 @@ try {
     SHOULD_LOG_ERRORS: process.env["SHOULD_LOG_ERRORS"] ?? "true",
   };
   await $`bun db:migrate`.nothrow();
-  await $({
+  const testProcess = await $({
     verbose: true,
     quote: (arg) => arg,
-  })`FORCE_COLOR=1 bun test ${positionalArgs.join(" ")}`;
+  })`FORCE_COLOR=1 bun test ${positionalArgs.join(" ")}`.nothrow();
+  exitCode = (await testProcess.exitCode) ?? 0;
 } finally {
   await dbProcess.kill("SIGINT");
 }
+
+process.exit(exitCode);