Upgraded crates, some formatting, and dependency updates.

Cargo.toml

@@ -10,7 +10,7 @@ color-eyre = "0.6.3"
 directories = "6.0"
 futures = "0.3"
 human-panic = "2.0"
-genai = "0.4.3"
+genai = "0.5"
 irc = "1.1"
 serde_json = "1.0"
 tracing = "0.1"
@@ -46,7 +46,7 @@ features = [
 
 [dev-dependencies]
 rstest = "~0.26"
-serial_test = "3.2"
+serial_test = "3.3"
 tempfile = "3.13"
 
 [dev-dependencies.cargo-husky]

src/setup.rs

@@ -134,7 +134,7 @@ pub fn make_config(args: Args) -> Result<Config> {
     info!("Starting.");
 
     Config::builder()
-        .add_source(config::File::with_name(&config_location.to_string_lossy()).required(false))
+        .add_source(config::File::with_name(&config_location.to_string_lossy()).required(true))
         .add_source(config::Environment::with_prefix("BOT"))
         // Doing all of these overrides provides a unified access point for options,
         // but a derive macro could do this a bit better if this becomes too large.