bump benchmark timeouts (#16817)

dev/devicelab/lib/tasks/microbenchmarks.dart

diff --git a/dev/devicelab/lib/tasks/microbenchmarks.dart b/dev/devicelab/lib/tasks/microbenchmarks.dart
index 2066112..08d6d89 100644
--- a/dev/devicelab/lib/tasks/microbenchmarks.dart
+++ b/dev/devicelab/lib/tasks/microbenchmarks.dart
@@ -14,7 +14,7 @@
 import 'package:flutter_devicelab/framework/utils.dart';
 
 /// The maximum amount of time a single microbenchmark is allowed to take.
-const Duration _kBenchmarkTimeout = const Duration(minutes: 6);
+const Duration _kBenchmarkTimeout = const Duration(minutes: 10);
 
 /// Creates a device lab task that runs benchmarks in
 /// `dev/benchmarks/microbenchmarks` reports results to the dashboard.

dev/devicelab/manifest.yaml

diff --git a/dev/devicelab/manifest.yaml b/dev/devicelab/manifest.yaml
index efea190..3d8492a 100644
--- a/dev/devicelab/manifest.yaml
+++ b/dev/devicelab/manifest.yaml
@@ -332,6 +332,7 @@
       Runs end-to-end Flutter tests on iOS.
     stage: devicelab_ios
     required_agent_capabilities: ["mac/ios"]
+    timeout_in_minutes: 20
 
   ios_sample_catalog_generator:
     description: >