bump Action workflow versions

.github/workflows/aardwolf-build.yml

@@ -13,14 +13,14 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
- 
+
   cargo-build:
     runs-on: ubuntu-latest
 
     steps:
 
       - name: Checkout
-        uses: actions/checkout@v3.5.3
+        uses: actions/checkout@v4 # Marketplace - https://github.com/marketplace/actions/checkout
         # Installs the most recent stable rust toolchain as of the specified time
         # offset, which may be written in years, months, weeks, or days.
       - uses: dtolnay/rust-toolchain@master
@@ -68,4 +68,4 @@ jobs:
 
 # Run cargo build
       - name: Cargo build aardwolf
-        run: cargo build
+        run: cargo build

.github/workflows/aardwolf-test.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       # Checkout the originating  branch 
-      - uses: actions/checkout@v3.5.3
+      - uses: actions/checkout@v4 
         with:
           ref: ${{ github.event.workflow_run.head_branch }}     
 

src/lib.rs

@@ -2,7 +2,7 @@ use std::env;
 use anyhow::{Context, Result};
 use clap::Parser;
 use clap_verbosity_flag::Verbosity;
-use config::{Config, ConfigError, Environment};
+use config::{Config, Environment};
 
 #[derive(Parser, Debug)]
 #[command(author, version, about, long_about = None)]