[test]: use int4 and int8 text_encoder_2 for smaller model size.

text_encoder_2/text_encoder_2_int4.onnx

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+size 830297

text_encoder_2/text_encoder_2_int4.onnx.data

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+oid sha256:4e6c33f829376f6f53e6f255a31de6133a7f8f48c8027b1fe903f7d58f787659
+size 455463680

text_encoder_2/text_encoder_2_int8.onnx

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+version https://git-lfs.github.com/spec/v1
+oid sha256:faec8a6145e6215485472f488fbb1803cf3dd70cc87d979f43db66da101fa183
+size 830748

text_encoder_2/text_encoder_2_int8.onnx.data

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+oid sha256:4628b1131334b57549a38b7e0e1a29c326ac856172c610c68d8c4e49f4efdc1b
+size 773319680