fix: remove Python 3.11 from CI workflow matrix

Author: MobyNL

.github/workflows/build_and_test.yml

@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.11, 3.12, 3.13]
+        python-version: [3.12, 3.13]
 
     steps:
       - name: Checkout code
@@ -41,7 +41,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: [3.11, 3.12, 3.13]
+        python-version: [3.12, 3.13]
 
     steps:
       - name: Checkout code