tox python bump and jsonschema version test (#278)

Author: nzlosh

requirements.txt

@@ -4,7 +4,9 @@
 chardet>=3.0.2
 eventlet
 jinja2>=2.11 # BSD License (3 clause)
-jsonschema>=4.18.5 # MIT
+#jsonschema>=4.18.5 # MIT
+# REVERT: only needed for testing incremental version bumps of jsonschema.
+jsonschema==4.1.0 # MIT
 # networkx v3.2 and greater does not support Python3.8.
 networkx>=2.6,<3.2
 python-dateutil

tox.ini

@@ -1,14 +1,13 @@
 [tox]
-envlist = py38,py39,py310,py311,pep8,docs
+envlist = py310,py311,py312,pep8,docs
 minversion = 1.6
 skipsdist = True
 
 [gh-actions]
 python =
-    3.8: py38,pep8,docs
-    3.9: py39
-    3.10: py310
+    3.10: py310,pep8,docs
     3.11: py311
+    3.12: py312
 
 [testenv]
 usedevelop = True