fix: anticipate Rust 1.98 clippy warnings

[Alenar]

Content

This PR fix preemptively clippy lints added or updated with rust 1.98.

Pre-submit checklist

• Branch
  • Crates versions are updated (if relevant)
  • Commit sequence broadly makes sense
  • Key commits have useful messages
• PR
  • All check jobs of the CI have succeeded
  • Self-reviewed the diff
  • Useful pull request description
  • Reviewer requested
  • No new TODOs introduced

Issue(s)

Closes #3484

[turmelclem]

LGTM 👍

[github-actions]

Test Results

     5 files  ± 0     209 suites  ±0   56m 4s ⏱️ - 1h 40m 37s
 3 398 tests  - 52   3 398 ✅  - 52  0 💤 ±0  0 ❌ ±0 
11 258 runs   - 55  11 258 ✅  - 55  0 💤 ±0  0 ❌ ±0 

Results for commit 17e2630. ± Comparison against base commit 58b575a.

This pull request removes 52 tests.

mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::index_out_of_bounds
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::index_too_large_for_circuit_range
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::indices_not_increasing
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::leaf_merkle_path_mismatch
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::leaf_swap_keep_merkle_path
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::leaf_wrong_verification_key
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::merkle_path_corrupt_sibling
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::merkle_path_flip_position
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::merkle_path_length_long
mithril-stm ‑ circuits::halo2::tests::golden::cases::negative::slow::merkle_path_length_short
…

[damrobi]

LGTM 👍