Post release updates

[agateau-gg]

• Update ggshield version in pre-commit to 1.29.0.
• Add a missing changelog entry.
• Update honeytoken doc.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 91.08%. Comparing base (2e31e08) to head (f37c2bd). Report is 19 commits behind head on main.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #921 +/- ## ========================================== - Coverage 91.42% 91.08% -0.34% ========================================== Files 174 174 Lines 7169 7167 -2 ========================================== - Hits 6554 6528 -26 - Misses 615 639 +24 ``` | [Flag](https://app.codecov.io/gh/GitGuardian/ggshield/pull/921/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GitGuardian) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/GitGuardian/ggshield/pull/921/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GitGuardian) | `91.08% <ø> (-0.34%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GitGuardian#carryforward-flags-in-the-pull-request-comment) to find out more.

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