[v8-test262-automation] Updated curation log with latest revision sha's from...

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 4dc8ce93 targetRevisionAtLastExport: 25f35328

implementation-contributed/curation_logs/v8.json

 {
-  "sourceRevisionAtLastExport": "4dc8ce93",
-  "targetRevisionAtLastExport": "25f3532881",
+  "sourceRevisionAtLastExport": "d34cbcd7",
+  "targetRevisionAtLastExport": "225cb28a69",
   "curatedFiles": {}
 }
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