ci: install newer vshard for reusable test

Tarantool 3 config requires vshard 0.1.25 or newer, while tests install
older versions by default (since crud is able to work with older
vshards).

.github/workflows/reusable_test.yml

@@ -39,6 +39,8 @@ jobs:
 
       - name: Install requirements
         run: ./deps.sh
+        env:
+          VSHARD_VERSION: "0.1.26"
 
       # This server starts and listen on 8084 port that is used for tests
       - name: Stop Mono server