Update Rust crate handlebars to 4.3.1 (#1400)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [handlebars](https://github.com/sunng87/handlebars-rust) | dependencies | patch | `4.3.0` -> `4.3.1` |

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Co-authored-by: cabr2-bot <cabr2.help@gmail.com>
Co-authored-by: crapStone <crapstone01@gmail.com>
Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1400
Reviewed-by: crapStone <crapstone@noreply.codeberg.org>
Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
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crates/load_save/Cargo.toml

@@ -14,7 +14,7 @@ async-trait = "0.1.56"
 chrono = { version = "0.4.19", optional = true }
 config = { path = "../config/", optional = true }
 error-ser = { path = "../error-ser" }
-handlebars = { version = "4.3.0", optional = true }
+handlebars = { version = "4.3.1", optional = true }
 lazy_static = "1.4.0"
 log = "0.4.17"
 lopdf = { version = "0.27.0", optional = true }