run CI with newer python versions (#82)

* test on `python=3.12` and `python=3.13`, as well

* add the new python versions to the classifiers

* move the upstream-dev ci to python 3.12

* remove `python=3.13` again

apparently it is not time for that, yet

* update the docs build to `python=3.12`

* use the latest ubuntu lts image on RTD

.github/workflows/ci.yaml

@@ -44,7 +44,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11"]
+        python-version: ["3.10", "3.11", "3.12"]
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
 
     steps:

.github/workflows/upstream-dev.yaml

@@ -51,7 +51,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.11"]
+        python-version: ["3.12"]
 
     steps:
       - name: checkout the repository

.readthedocs.yaml

@@ -1,9 +1,9 @@
 version: 2
 
 build:
-  os: ubuntu-22.04
+  os: ubuntu-lts-latest
   tools:
-    python: "3.11"
+    python: "3.12"
   jobs:
     post_checkout:
       - (git --no-pager log --pretty="tformat:%s" -1 | grep -vqF "[skip-rtd]") || exit 183

pyproject.toml

@@ -32,6 +32,8 @@ classifiers = [
   "Programming Language :: Python :: 3 :: Only",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Intended Audience :: Science/Research",
   "Topic :: Scientific/Engineering",
 ]