Roll engine to 549c855e89341b97436b3417542fc8f997492df7 (#18591)

* Roll to 549c855e89341b97436b3417542fc8f997492df7

* Clean up return void - see https://github.com/dart-lang/sdk/issues/33218

bin/internal/engine.version

-0c119932c0d6cb30dafd75ec717d1eda76fd7651
+549c855e89341b97436b3417542fc8f997492df7

packages/flutter_tools/lib/src/base/fingerprint.dart

@@ -75,7 +75,7 @@ class Fingerprinter {
   Future<void> writeFingerprint() async {
     try {
       final Fingerprint fingerprint = await buildFingerprint();
-      return fs.file(fingerprintPath).writeAsStringSync(fingerprint.toJson());
+      fs.file(fingerprintPath).writeAsStringSync(fingerprint.toJson());
     } catch (e) {
       // Log exception and continue, fingerprinting is only a performance improvement.
       printTrace('Fingerprint write error: $e');