add 3.12 images to build

.gitlab-ci.yml

@@ -32,3 +32,19 @@ python:3.11:alpine:
   script:
     - ./build.sh
 
+python:3.12:
+  variables:
+    IMAGE_NAME: python
+    IMAGE_TAG: "3.12"
+    SOURCE_TAG: "3.12-slim"
+  script:
+    - ./build.sh
+
+python:3.12:alpine:
+  variables:
+    IMAGE_NAME: python
+    IMAGE_TAG: "3.12-alpine"
+    SOURCE_TAG: "3.12-alpine"
+  script:
+    - ./build.sh
+