chore: replace dotenv with dotenvy, a slightly more maintained version of the same library

crates/gitnow/Cargo.toml

@@ -17,7 +17,7 @@ tokio.workspace = true
 tracing.workspace = true
 tracing-subscriber.workspace = true
 clap.workspace = true
-dotenv.workspace = true
+dotenvy.workspace = true
 
 serde = { version = "1.0.197", features = ["derive"] }
 uuid = { version = "1.7.0", features = ["v4"] }

crates/gitnow/src/main.rs

@@ -57,7 +57,7 @@ const DEFAULT_CONFIG_PATH: &str = ".config/gitnow/gitnow.toml";
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
-    dotenv::dotenv().ok();
+    dotenvy::dotenv().ok();
     tracing_subscriber::fmt()
         .with_env_filter(
             EnvFilter::builder()