chore(deps): refresh uv.lock (#171)

## Summary

Maintenance sweep, lock-only (no pyproject or source change). Requested
by Varun as part of the weekly sweep. Notable moves:
- pytempo 0.6.2 to 0.7.0, under pympp's `tempo` extra. Read from the
wheel diff: additive for every symbol pympp 0.11 imports (`Call`,
`TempoTransaction`, `sign_tx_access_key`, `Signature`, `as_address`). It
adds P256/WebAuthn signatures and transaction decoding, and now rejects
`valid_after >= valid_before` when both are set, matching the Tempo
node's own rule.
- python-dateutil 3.0.0 to 4.0.0, under cdp-sdk (`coinbase` extra),
inside cdp-sdk's declared range; six drops out with it.
- OpenTelemetry 1.45.2 / 0.66b2, pydantic 2.14.2, stripe 16.1.0, anyio,
trio, ty and others.

Holds unchanged: pympp stays at 0.11 and web3 below 8 (dependency holds
registry).

No release: the change is `uv.lock` only, so the wheel and the installed
package cannot change.

## Type of change

- [ ] Bug fix (no breaking change)
- [ ] New feature (no breaking change)
- [ ] Breaking change (existing callers must update)
- [x] Docs, tests, or internal maintenance only

## Public API

none

## Test plan

Ran locally after `uv sync --all-extras --all-groups`: ruff check, ruff
format --check, ty (package and examples), vulture and pytest (1674
passed, coverage 97.44%) all exit 0. osv-scanner with the repo config:
no issues across 162 packages.

## Checklist

- [x] Tests cover the new behavior, and the suite passes locally
- [x] Lint, format, and type checks pass
- [x] Docs and README examples updated if the public surface changed
(nothing public changed)
- [x] No secrets, credentials, or personal data in the diff or the tests

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: vvillait88