Extend timeout for numfuzz by 10 minutes

This is to investigate if higher timeouts mitigate the timeout problems.
If not it'd mean somethings actually hanging.

TBR=sergiyb@chromium.org

Bug: v8:9098
Change-Id: Idd9ae79e6f7bbede79b09498dd1acca429495308
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1563970
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#60762}

infra/testing/builders.pyl

@@ -1389,8 +1389,8 @@
   # Clusterfuzz.
   'V8 NumFuzz': {
     'swarming_task_attrs': {
-      'expiration': 14400,
-      'hard_timeout': 3600,
+      'expiration': 13800,
+      'hard_timeout': 4200,
       'priority': 35,
     },
     'tests': [
@@ -1403,8 +1403,8 @@
   },
   'V8 NumFuzz - TSAN': {
     'swarming_task_attrs': {
-      'expiration': 14400,
-      'hard_timeout': 3600,
+      'expiration': 13800,
+      'hard_timeout': 4200,
       'priority': 35,
     },
     'tests': [
@@ -1448,8 +1448,8 @@
   },
   'V8 NumFuzz - debug': {
     'swarming_task_attrs': {
-      'expiration': 14400,
-      'hard_timeout': 3600,
+      'expiration': 13800,
+      'hard_timeout': 4200,
       'priority': 35,
     },
     'tests': [