chore: Update Poetry to 2.3.1

Author: thehale

.github/workflows/docker-image.yml

@@ -39,7 +39,7 @@ jobs:
     strategy:
       matrix:
         python_image_tag: ["3.10-slim", "3.11-slim", "3.12-slim", "3.13-slim", "3.14-slim"]
-        poetry_version: ["1.8.5", "2.3.0"]
+        poetry_version: ["1.8.5", "2.3.1"]
 
     steps:
     - uses: actions/checkout@v3