Bump CodSpeed to v3

[adriencaccia]

As explained in the codspeed-rust v3 release notes, there was an issue with the divan walltime metrics for some benchmarks.

A performance increase of the following benchmarks is expected, as now the correct metric will be used.

      "block-multiplier/benches/bench.rs::mul::ark_ff",
      "block-multiplier/benches/bench.rs::mul::block_mul",
      "block-multiplier/benches/bench.rs::mul::montgomery_interleaved_3",
      "block-multiplier/benches/bench.rs::mul::montgomery_interleaved_4",
      "block-multiplier/benches/bench.rs::mul::scalar_mul",
      "block-multiplier/benches/bench.rs::mul::simd_mul",
      "block-multiplier/benches/bench.rs::sqr::ark_ff",
      "block-multiplier/benches/bench.rs::sqr::block_sqr",
      "block-multiplier/benches/bench.rs::sqr::montgomery_square_interleaved_3",
      "block-multiplier/benches/bench.rs::sqr::montgomery_square_interleaved_4",
      "block-multiplier/benches/bench.rs::sqr::montgomery_square_log_interleaved_3",
      "block-multiplier/benches/bench.rs::sqr::montgomery_square_log_interleaved_4",
      "block-multiplier/benches/bench.rs::sqr::scalar_sqr",
      "block-multiplier/benches/bench.rs::sqr::simd_sqr",
      "fp-rounding/benches/main.rs::wrm_overhead",
      "skyscraper/benches/bench.rs::parts::bar",
      "skyscraper/benches/bench.rs::parts::sbox",
      "skyscraper/benches/bench.rs::parts::sbox_16",
      "skyscraper/benches/bench.rs::parts::sbox_8",
      "skyscraper/benches/bench.rs::parts::square",
      "skyscraper/benches/bench.rs::reduce::reduce",
      "skyscraper/benches/bench.rs::reduce::reduce_1",
      "skyscraper/benches/bench.rs::reduce::reduce_1_partial",
      "skyscraper/benches/bench.rs::reduce::reduce_add_rc",
      "skyscraper/benches/bench.rs::reduce::reduce_partial",

Once this is merged, we will update the historic data of the affected benchmark on the CodSpeed UI, so that no false positives will appear.