Update Rust crate regex to 1.7.3 (#1827)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [regex](https://github.com/rust-lang/regex) | dependencies | patch | `1.7.1` -> `1.7.3` |

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### Release Notes

<details>
<summary>rust-lang/regex</summary>

### [`v1.7.3`](https://github.com/rust-lang/regex/blob/HEAD/CHANGELOG.md#&#8203;173-2023-03-24)

[Compare Source](rust-lang/regex@1.7.2...1.7.3)

\==================
This is a small release that fixes a bug in `Regex::shortest_match_at` that
could cause it to panic, even when the offset given is valid.

Bug fixes:

-   [BUG #&#8203;969](rust-lang/regex#969):
    Fix a bug in how the reverse DFA was called for `Regex::shortest_match_at`.

### [`v1.7.2`](https://github.com/rust-lang/regex/blob/HEAD/CHANGELOG.md#&#8203;172-2023-03-21)

[Compare Source](rust-lang/regex@1.7.1...1.7.2)

\==================
This is a small release that fixes a failing test on FreeBSD.

Bug fixes:

-   [BUG #&#8203;967](rust-lang/regex#967):
    Fix "no stack overflow" test which can fail due to the small stack size.

</details>

---

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---

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Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1827
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crates/load_save/Cargo.toml

@@ -17,7 +17,7 @@ lazy_static = "1.4.0"
 log = "0.4.17"
 lopdf = { version = "0.30.0", optional = true }
 quick-xml = { version = "0.28.1", features = ["serialize"], optional = true }
-regex = { version = "1.7.1", optional = true }
+regex = { version = "1.7.3", optional = true }
 serde = { version = "1.0.160", features = ["derive"] }
 serde_json = { version = "1.0.95", optional = true }
 thiserror = "1.0.40"

crates/search/Cargo.toml

@@ -18,7 +18,7 @@ futures = { version = "0.3.28", optional = true }
 lazy_static = "1.4.0"
 log = "0.4.17"
 quick-xml = { version = "0.28.1", optional = true, features = ["serialize"] }
-regex = { version = "1.7.1", optional = true }
+regex = { version = "1.7.3", optional = true }
 reqwest = { version = "0.11.16", features = ["deflate", "gzip", "json", "native-tls"], default-features = false, optional = true }
 serde = { version = "1.0.160", features = ["derive"] }
 serde_json = "1.0.95"