Update image name in integration README (go-gitea#35465)

Followup to go-gitea#35402.

Author: silverwind

tests/integration/README.md

@@ -60,7 +60,7 @@ docker run -e "POSTGRES_DB=test" -e "POSTGRES_USER=postgres" -e "POSTGRES_PASSWO
 ```
 Setup minio inside docker
 ```
-docker run --rm -p 9000:9000 -e MINIO_ROOT_USER=123456 -e MINIO_ROOT_PASSWORD=12345678 --name minio bitnami/minio:2023.8.31
+docker run --rm -p 9000:9000 -e MINIO_ROOT_USER=123456 -e MINIO_ROOT_PASSWORD=12345678 --name minio bitnamilegacy/minio:2023.8.31
 ```
 Start tests based on the database container
 ```

tests/integration/README_ZH.md

@@ -56,7 +56,7 @@ docker run -e "POSTGRES_DB=test" -e "POSTGRES_USER=postgres" -e "POSTGRES_PASSWO
 ```
 在docker内设置minio
 ```
-docker run --rm -p 9000:9000 -e MINIO_ROOT_USER=123456 -e MINIO_ROOT_PASSWORD=12345678 --name minio bitnami/minio:2023.8.31
+docker run --rm -p 9000:9000 -e MINIO_ROOT_USER=123456 -e MINIO_ROOT_PASSWORD=12345678 --name minio bitnamilegacy/minio:2023.8.31
 ```
 之后便可以基于这个数据库进行集成测试
 ```