[tests] Python 3.12 fails due to deprectated datetime.utcnow() function

Allow Python 3.12 test fail until T337748 has been solved.

Bug: T337748
Change-Id: I121eddd20e8d71d3c1548402df3fb3c355b50a56
---
M .github/workflows/pywikibot-ci.yml
1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/pywikibot-ci.yml b/.github/workflows/pywikibot-ci.yml
index edbdc50..0d02106 100644
--- a/.github/workflows/pywikibot-ci.yml
+++ b/.github/workflows/pywikibot-ci.yml
@@ -26,7 +26,7 @@
       max-parallel: 17
 
       matrix:
-        python-version: ["pypy3.7", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12.0-alpha - 3.12.0"]
+        python-version: ["pypy3.7", "3.7", "3.8", "3.9", "3.10", "3.11"]
         site: ['wikipedia:en', 'wikisource:zh']
         test_prod_only: [true]
         include:
@@ -66,6 +66,14 @@
             site: wikisource:zh
             test_prod_only: true
             os: ubuntu-20.04
+          - python-version: "3.12.0-alpha - 3.12.0"  # 3.12 fails due to T337748
+            site: wikipedia:en
+            test_prod_only: true
+            experimental: true
+          - python-version: "3.12.0-alpha - 3.12.0"  # 3.12 fails due to T337748
+            site: wikisource:zh
+            test_prod_only: true
+            experimental: true
 
     steps:
     - name: Checkout Repository

