ci: pin typos pre-commit hook

[shaypal5]

Summary

• Pin the crate-ci/typos pre-commit hook from mutable v1 to v1.47.0.
• Avoid resolving to upstream v1.47.1, whose matching PyPI package is not currently available.
• Keep the change limited to .pre-commit-config.yaml.

Closes #386.

Validation

• pre-commit run typos --all-files
• pre-commit run --all-files

Context

This unblocks the GitHub Actions pre-commit job currently failing on PR #385 before it reaches that PR's cleanup changes.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.95%. Comparing base (ce16a58) to head (5651faf).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #387   +/-   ##
=======================================
  Coverage   99.95%   99.95%           
=======================================
  Files          16       16           
  Lines        2109     2109           
  Branches      251      251           
=======================================
  Hits         2108     2108           
  Partials        1        1           

Flag	Coverage Δ
local	66.57% <ø> (ø)
mongodb	40.01% <ø> (ø)
postgres	42.10% <ø> (ø)
redis	44.57% <ø> (ø)
s3	41.29% <ø> (ø)

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