ci: add testing against Tarantool 2.11

Author: ylobankov

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
-        tarantool-version: ['2.8', '2.10']
+        tarantool-version: ['2.8', '2.10', '2.11']
 
     steps:
     - uses: actions/checkout@v3