ci: add 3.12 to the CI test matrix (#140)

Author: mjpieters

.azure-pipelines/ci.yml

@@ -24,3 +24,4 @@ stages:
         - "3.9"
         - "3.10"
         - "3.11"
+        - "3.12.0-beta.4"

.azure-pipelines/deploy.yml

@@ -18,6 +18,7 @@ stages:
         - "3.9"
         - "3.10"
         - "3.11"
+        - "3.12.0-beta.4"
 
   - template: stage-deploy.yml
     parameters:
@@ -26,5 +27,6 @@ stages:
         - "3.9"
         - "3.10"
         - "3.11"
+        - "3.12.0-beta.4"
 
   - template: stage-publish.yml

.azure-pipelines/stage-test.yml

@@ -39,6 +39,7 @@ stages:
             inputs:
               versionSpec: "$(python.version)"
               architecture: "x64"
+              allowUnstable: true
 
           - bash: |
               export POETRY_HOME="$PIPELINE_WORKSPACE/.poetry"