Add python 3.12 to circleci config.

.circleci/config.yml

@@ -35,6 +35,10 @@ jobs:
           root: .
           paths:
             - ./coverage_*.xml
+  test-py312:
+    <<: *test-py38
+    docker:
+      - image: cimg/python:3.12
   test-py311:
     <<: *test-py38
     docker:
@@ -84,7 +88,7 @@ jobs:
           command: |
             curl -Os https://uploader.codecov.io/latest/linux/codecov
             chmod +x codecov
-            for py in 3.7 3.8 3.9 3.10 3.11; do
+            for py in 3.7 3.8 3.9 3.10 3.11 3.12; do
               for suffix in "" _all _types _pydantic1 _pydantic2; do
                 if [ -f coverage_py${py}${suffix}.xml ]; then
                   ./codecov \
@@ -128,6 +132,8 @@ workflows:
               only: /^v\d+\.\d+\.\d+.*$/
       - test-py38:
           <<: *buildreq
+      - test-py312:
+          <<: *buildreq
       - test-py311:
           <<: *buildreq
       - test-py310:
@@ -140,6 +146,7 @@ workflows:
           <<: *buildreq
       - codecov:
           requires:
+            - test-py312
             - test-py311
             - test-py310
             - test-py39