chore(tests.yml): update Python testing strategy to remove version 3.12

Remove Python 3.12 from the testing matrix to streamline the testing
process and focus on compatibility with Python 3.13. This change
reflects a decision to support only the latest version in the 3.x
series, reducing maintenance overhead and ensuring that the tests
are aligned with the most current Python features and improvements.

Author: kzndotsh

.github/workflows/tests.yml

@@ -9,7 +9,7 @@
 #
 # TESTING STRATEGY:
 # -----------------
-# 1. Multi-version Python testing (3.12, 3.13) for compatibility
+# 1. Multi-version Python testing (3.13) for compatibility
 # 2. Categorized test execution (Unit, Database, Integration)
 # 3. Intelligent test discovery and conditional execution
 # 4. Parallel test execution for performance optimization
@@ -82,7 +82,6 @@ jobs:
       fail-fast: false
       matrix:
         python-version:                     # Supported Python versions
-          - '3.12'
           - '3.13'
     steps:
       # REPOSITORY CHECKOUT