feat: PasswordUpdatedAt column + auto-update with a fn and trigger

[spencewenski]

Add a password_updated_at column to the user table, and add a function + trigger to automatically update the timestamp when the password column is updated.

closes #299

[codecov]

Codecov Report

Attention: Patch coverage is 51.59236% with 76 lines in your changes missing coverage. Please review.

Project coverage is 47.96%. Comparing base (9fae690) to head (5dc4f40).

Files	Coverage Δ
...ion/user/m20240724_005115_user_update_timestamp.rs	0.00% <ø> (ø)
src/migration/user/mod.rs	100.00% <100.00%> (ø)
...ation/user/m20240729_000812_password_updated_at.rs	70.00% <70.00%> (ø)
...er/m20240729_002615_password_updated_at_trigger.rs	0.00% <0.00%> (ø)
...r/m20240729_002549_password_updated_at_function.rs	0.00% <0.00%> (ø)
src/migration/timestamp/mod.rs	56.27% <54.70%> (-0.22%)	⬇️

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 9fae690...5dc4f40. Read the comment docs.