add version support notice

Author: nekufa

.github/workflows/tests.yml

@@ -6,7 +6,7 @@ jobs:
     strategy:
       matrix:
         php: ["8.0", "8.3"]
-        tarantool: ["1.10", "2.11", "3.0", "3.1"]
+        tarantool: ["2.11", "3.0", "3.1"]
     steps:
       - uses: actions/checkout@v2
       - uses: php-actions/composer@v6

README.md

@@ -15,6 +15,7 @@
 - [Performance](#performance)
 
 ## Getting started
+Supported versions are php 8+ and tarantool 2+.\
 The recommended way to install the library is through [Composer](http://getcomposer.org):
 ```bash
 composer require tarantool/mapper