use dedicate .env file for 6.2.16

Author: ggivo

.github/workflows/test-on-docker.yml

@@ -66,7 +66,7 @@ jobs:
           export REDIS_VERSION="${{ matrix.redis_version }}"
           export COMPOSE_ENV_FILES="src/test/resources/env/.env"
           if [[ "${{ matrix.redis_version }}" == "6.2.16" ]]; then
-           COMPOSE_ENV_FILES+=",src/test/resources/env/.env.v${{ matrix.redis_version }}"
+           COMPOSE_ENV_FILES="src/test/resources/env/.env.v${{ matrix.redis_version }}"
           fi
           docker compose -f src/test/resources/env/docker-compose.yml up -d
       - name: Maven offline