Merge pull request #337 from PowerGridModel/feature/test-python3.14

add testing for python3.14

Author: mgovers

.github/workflows/build-test-release.yml

@@ -69,7 +69,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python: ["3.11", "3.12", "3.13"]
+        python: ["3.11", "3.12", "3.13", "3.14"]
       fail-fast: false
     runs-on: ${{ matrix.os }}
 
@@ -100,7 +100,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python: ["3.11", "3.12", "3.13"]
+        python: ["3.11", "3.12", "3.13", "3.14"]
       fail-fast: false
     runs-on: ${{ matrix.os }}