Fix the deps of longbench from jeiba to jieba (#2873)

Signed-off-by: Lu Fang <lufang@fb.com>

pyproject.toml

@@ -68,7 +68,7 @@ ibm_watsonx_ai = ["ibm_watsonx_ai>=1.1.22", "python-dotenv"]
 ifeval = ["langdetect", "immutabledict", "nltk>=3.9.1"]
 ipex = ["optimum"]
 japanese_leaderboard = ["emoji==2.14.0", "neologdn==0.5.3", "fugashi[unidic-lite]", "rouge_score>=0.1.2"]
-longbench=["jeiba", "fuzzywuzzy", "rouge"]
+longbench=["jieba", "fuzzywuzzy", "rouge"]
 mamba = ["mamba_ssm", "causal-conv1d==1.0.2"]
 math = ["sympy>=1.12", "antlr4-python3-runtime==4.11", "math_verify[antlr4_11_0]"]
 multilingual = ["nagisa>=0.2.7", "jieba>=0.42.1", "pycountry"]