Fail if unsupported okhttp3 is found. (#1211)
Fail if unsupported okhttp3 is found. (#1211)

As `okhttp` 4.x and 3.x use same package name `okhttp3`, `minio-java`
fails at middle of runtime if `okhttp` 3.x is used. This patch fails
at beginning if unsupported okhttp3 is found.

Signed-off-by: Bala.FA <301fb22efded18e24d439b3ab48940c26b75aa55@gmail.com>
balamurugana/minio-java,minio/minio-java