CI: also test on python 3.11-dev

.github/workflows/ci.yml

@@ -57,6 +57,9 @@ jobs:
             - os: ubuntu-20.04
               python-version: '3.10'
               toxenv: py310-fuse3
+            - os: ubuntu-20.04
+              python-version: '3.11-dev'
+              toxenv: py311-fuse2
             - os: macos-10.15  # macos-latest is macos 11.6.2 and hanging at test_fuse, #6099
               python-version: '3.9'
               toxenv: py39-fuse2

tox.ini

@@ -2,7 +2,7 @@
 # fakeroot -u tox --recreate
 
 [tox]
-envlist = py{39,310}-{none,fuse2,fuse3}
+envlist = py{39,310,311}-{none,fuse2,fuse3}
 minversion = 3.2
 requires =
 	pkgconfig