feat: drop python 3.9 support

Author: KennethEnevoldsen

.github/workflows/tests.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ["3.9", "3.10"]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
 
     # This allows a subsequently queued workflow run to interrupt previous runs
     concurrency:
@@ -49,7 +49,6 @@ jobs:
           pip install ".[tutorials]"
           pip install -r ./docs/tutorials/requirements.txt
 
-
       - name: Convert and run notebooks
         shell: bash
         run: |

pyproject.toml

@@ -17,7 +17,6 @@ classifiers = [
     "Operating System :: MacOS :: MacOS X",
     "Operating System :: Microsoft :: Windows",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",