CI: Test against py310

.gitlab-ci.yml

@@ -171,6 +171,12 @@ test:3.9:
   <<: *test_template
 
 
+test:3.10:
+  stage: test
+  image: pauldmccarthy/fsleyes-py310-wxpy4-gtk3
+  <<: *test_template
+
+
 test:build-pypi-dist:
   stage: test
   image: pauldmccarthy/fsleyes-py37-wxpy4-gtk3