Update dependency pydantic to v2.7.3

[te25son]

This PR contains the following updates:

Package	Type	Update	Change
pydantic (changelog)	dependencies	patch	2.7.2 -> 2.7.3

---

Release Notes

pydantic/pydantic (pydantic)

### [`v2.7.3`](https://togithub.com/pydantic/pydantic/blob/HEAD/HISTORY.md#v273-2024-06-03) [Compare Source](https://togithub.com/pydantic/pydantic/compare/v2.7.2...v2.7.3) [GitHub release](https://togithub.com/pydantic/pydantic/releases/tag/v2.7.3) ##### What's Changed ##### Packaging - Bump `pydantic-core` to `v2.18.4` by [@​sydney-runkle](https://togithub.com/sydney-runkle) in [#​9550](https://togithub.com/pydantic/pydantic/pull/9550) ##### Fixes - Fix u style unicode strings in python [@​samuelcolvin](https://togithub.com/samuelcolvin) in [pydantic/jiter#110](https://togithub.com/pydantic/jiter/pull/110)

---

Configuration

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

🚦 Automerge: Enabled.

♻ 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 has been generated by Renovate Bot.