Update Rust crate serde_json to v1.0.121

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
serde_json	dependencies	patch	=1.0.120 -> =1.0.121

---

Release Notes

serde-rs/json (serde_json)

v1.0.121

Compare Source

• Optimize position search in error path (#​1160, thanks @​purplesyringa)

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.15%. Comparing base (c4f7e2b) to head (50b2518).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9187   +/-   ##
=======================================
  Coverage   89.15%   89.15%           
=======================================
  Files         282      282           
  Lines       28529    28529           
=======================================
+ Hits        25434    25435    +1     
+ Misses       3095     3094    -1     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.