Update Rust crate lopdf to 0.30.0 (#1857)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [lopdf](https://github.com/J-F-Liu/lopdf) | dependencies | minor | `0.29.0` -> `0.30.0` |

---

### Release Notes

<details>
<summary>J-F-Liu/lopdf</summary>

### [`v0.30.0`](J-F-Liu/lopdf@v0.29.0...v0.30.0)

[Compare Source](J-F-Liu/lopdf@v0.29.0...v0.30.0)

</details>

---

### 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.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNS4zOC4wIiwidXBkYXRlZEluVmVyIjoiMzUuMzguMCJ9-->

Co-authored-by: cabr2-bot <cabr2.help@gmail.com>
Co-authored-by: crapStone <crapstone01@gmail.com>
Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1857
Reviewed-by: crapStone <crapstone@noreply.codeberg.org>
Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>

crates/load_save/Cargo.toml

@@ -15,7 +15,7 @@ chrono = { version = "0.4.24", default-features = false, optional = true }
 handlebars = { version = "4.3.6", optional = true }
 lazy_static = "1.4.0"
 log = "0.4.17"
-lopdf = { version = "0.29.0", optional = true }
+lopdf = { version = "0.30.0", optional = true }
 quick-xml = { version = "0.28.1", features = ["serialize"], optional = true }
 regex = { version = "1.7.1", optional = true }
 serde = { version = "1.0.159", features = ["derive"] }