[dumpling] Disable timestamp non-determinism.

Quoting Leszek: "--predictable basically disables any concurrency so
that everything is scheduled on the main thread. --verify-predictable
additionally adds a synthetic clock so that things like timestamps have
a fixed value, for being able to verify predictability by hashing"

Additionally --verify-predictable implies --predictable.

Bug: 441467877
Change-Id: I7c47d00b8de8242f4b029e60fe79816713756a2f
Reviewed-on: https://chrome-internal-review.googlesource.com/c/v8/fuzzilli/+/9012917
Reviewed-by: Dominik Klemba <tacet@google.com>
Commit-Queue: Danylo Mocherniuk <mdanylo@google.com>

Author: Danylo Mocherniuk

Sources/FuzzilliCli/Profiles/V8DumplingProfile.swift

@@ -28,7 +28,7 @@ let v8DumplingProfile = Profile(
             "--experimental-fuzzing",
             "--js-staging",
             "--expose-fast-api",
-            "--predictable",
+            "--verify-predictable",
             "--no-sparkplug",
             "--maglev-dumping",
             "--turbofan-dumping",
@@ -56,7 +56,7 @@ let v8DumplingProfile = Profile(
         "--experimental-fuzzing",
         "--js-staging",
         "--expose-fast-api",
-        "--predictable"
+        "--verify-predictable"
     ],
 
     processEnv: [:],