Rename pytest46 to pytestoldest and add Python 3.12 testing

Author: astrofrog

.github/workflows/ci_workflows.yml

@@ -12,7 +12,7 @@ jobs:
     uses: OpenAstronomy/github-actions-workflows/.github/workflows/tox.yml@v1
     with:
       envs: |
-        - linux: py37-test-pytest46
+        - linux: py37-test-pytestoldest
         - macos: py37-test-pytest50
         - windows: py38-test-pytest52
         - linux: py38-test-pytest53
@@ -24,7 +24,7 @@ jobs:
         - linux: py310-test-pytest72
         - macos: py310-test-pytest73
         - windows: py311-test-pytest74
-        - linux: py311-test-pytestdev
+        - linux: py312-test-pytestdev
   publish:
     needs: tests
     uses: OpenAstronomy/github-actions-workflows/.github/workflows/publish_pure_python.yml@v1

tox.ini

@@ -11,7 +11,7 @@ isolated_build = true
 changedir = .tmp/{envname}
 description = run tests
 deps =
-    pytest46: pytest==4.6.*
+    pytestoldest: pytest==4.6.0
     pytest50: pytest==5.0.*
     pytest52: pytest==5.2.*
     pytest53: pytest==5.3.*