Getting apt-key warning when trying to install Griddb

I am trying to install Griddb on my WSL version: 22.04.2

using command:

sudo sh -c 'echo "deb https://www.griddb.net/apt griddb/5.3 multiverse" >>  /etc/apt/sources.list.d/griddb.list'

then I have executed this:

wget -qO - https://www.griddb.net/apt/griddb.asc | sudo apt-key add -

but getting warning:

Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).

how to resolve this warning and how can I update it and what impact it may cause to Griddb?