tarantool test matrix tune

Author: nekufa

.github/workflows/tests.yml

@@ -6,7 +6,7 @@ jobs:
     strategy:
       matrix:
         php: ["8.0", "8.1", "8.2", "8.3"]
-        tarantool: ["2.6", "2.8", "2.10", "2.11"]
+        tarantool: ["2.8", "2.10", "2.11", "3.0", "3.1"]
     steps:
       - uses: actions/checkout@v2
       - uses: php-actions/composer@v6