Update main.yml

Update main.yml

Signed-off-by: James Courtier-Dutton <james@superbug.co.uk>

Author: jcdutton

.github/workflows/main.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checkout Repository with Submodules
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive