CI: remove Python 3.14 due to serde compatibility issues

Author: dannywillems

.github/workflows/action.yml

@@ -6,7 +6,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.13", "3.14"]
+        python-version: ["3.13"]
         poetry-version: ["2.3.1"]
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
     runs-on: ${{ matrix.os }}