Add config for newer Matplotlib versions

Author: dstansby

.github/workflows/test_and_publish.yml

@@ -31,9 +31,9 @@ jobs:
         - macos: py311-test-mpl37
         - windows: py311-test-mpl37
         # Test newest configurations
-        - linux: py312-test-mpl38
-        - macos: py312-test-mpl38
-        - windows: py312-test-mpl38
+        - linux: py313-test-mpl310
+        - macos: py313-test-mpl310
+        - windows: py313-test-mpl310
         # Test intermediate NEP 29 configurations on Linux
         - linux: py39-test-mpl38
         - linux: py310-test-mpl38

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{39,310,311,312}-test-mpl{37,38}
+    py{39,310,311,312}-test-mpl{37,38,39,310}
     py312-test-mpldev-pytestdev
     codestyle
 requires =
@@ -21,6 +21,8 @@ description = run tests
 deps =
     mpl37: matplotlib==3.7.*
     mpl38: matplotlib==3.8.*
+    mpl39: matplotlib==3.9.*
+    mpl310: matplotlib==3.10.*
     mpldev: matplotlib>=0.0.dev0
     pytest54: pytest==5.4.*
     pytest60: pytest==6.0.*