Rebuild test binarys by new gcc

[mohanson]

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The newly built gcc will bring some performance improvements

https://hub.docker.com/layers/nervos/ckb-riscv-gnu-toolchain/bionic-20210727/images/sha256-1e8835b34f7425599520e197b538bbeb262011c7c95be5f597255e0d1c309e3a?context=explore

At the same time we need the bench result of secp256k1.