Add evaluation results on the default config and test split of xsum

Beep boop, I am a bot from Hugging Face's automatic model evaluator 👋!\
Your model has been evaluated on the default config and test split of the [xsum](https://huggingface.co/datasets/xsum) dataset by

@pszemraj

, using the predictions stored [here](https://huggingface.co/datasets/autoevaluate/autoeval-eval-xsum-default-98b05d-39746145061).\
Accept this pull request to see the results displayed on the [Hub leaderboard](https://huggingface.co/spaces/autoevaluate/leaderboards?dataset=xsum).\
Evaluate your model on more datasets [here](https://huggingface.co/spaces/autoevaluate/model-evaluator?dataset=xsum).

README.md

@@ -23,25 +23,25 @@ model-index:
       split: test
     metrics:
     - type: rouge
-      value: 39.3722
+      value: 39.3614
       name: ROUGE-1
       verified: true
-      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiN2YzZmMyZjk4OTdlMmJiMWY4NzZmNTMwMTFkZmFiNjE3ZjE2MWY2ODY3MGZkYjdiNzBkNDAyMmE2ODRmNzA3YyIsInZlcnNpb24iOjF9.6OEAAa9Hy9xxkAsXyyxylTPoerL8OMg2Cc_jP0KGA25ZQCF3LLZFMrSyi93AMoqBfRCcdaJ7ypE2b1m2YVNcAw
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     - type: rouge
-      value: 17.5791
+      value: 17.5887
       name: ROUGE-2
       verified: true
-      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiY2IwYjBiYTUzNjZlMjdjNjI5NmVjNGU3N2E0MzdhYmIxODI1NTM5N2I4MTcwMGIyNWRkZjhmM2UzZDY2ZWJkYSIsInZlcnNpb24iOjF9.p30-YNYekLdiVwNFGmm3-FJP0iBQgOpkmyxjM8xlNGRGc2iihhNAwe4ewRFYmkRSjnbrHjoGKERBq_-3DzE1Cw
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     - type: rouge
-      value: 32.6528
+      value: 32.6489
       name: ROUGE-L
       verified: true
-      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiNjg0ZDIyMDUwYzFiZjMwYzUxOTg4MDlmODcwMTdiNzFlNDQ4NDViYTgzNmMwYmRlODgzODM0MjdlMzU3NGU3MCIsInZlcnNpb24iOjF9.kIYuS58Tws-oEyuneymCC4by4yfI0zsq2uHOUYNfEHmGYdetsgFzzBuVmTHa37KRD30MuDk-RPCy-kam25CVCg
+      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiZmFkOTc2MTIxMmYyNTY2MWE3Y2E4ZWYwODQ5MmU3NTIxZWM2Yzg2ZDNkYjE3NDgzM2VjYTMwOTkxNjQ1YmIyYiIsInZlcnNpb24iOjF9.AAAh5SnRDnTMCEXMfEp9N7pwHITv-crNloZTnbW7TMPXtMUe7vzATOxGVMZpMe-Nsf3Wkc3JbUdaZZ9bOb17Ag
     - type: rouge
-      value: 32.6438
+      value: 32.6435
       name: ROUGE-LSUM
       verified: true
-      verifyToken: eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJoYXNoIjoiOWJlMDlhOTQ4ZjI5ZWZkZTNmNzZmNGI0NzhkYmYwZGUxNDZkYzFiYTFmOGIxZTgxZWNiMGQ3YzY2NTUwYzhkYyIsInZlcnNpb24iOjF9.S4ioChbfEA1hDf4jnRBCTUk9oLX9bX82We6W4SzsLmT3BAYe1wBPgfpDvSUQ1PQhZk5IaDwfKtKF_z1coqBVDQ
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     - type: loss
       value: 1.4964560270309448
       name: loss