When adding a new chain like Thundercore Mainnet to the safe-deployments repository, it means that you have completed the initial steps of deploying the Safe app on that network, such as configuring the network parameters and setting up the necessary contracts.
However, there may be additional tasks that need to be completed before the Safe app can be fully supported on that network. This may include updating libraries that support the custom network for the safe-infrastructure, as well as other related repositories like the ones you mentioned.
If you need the Safe app to be supported on the Thundercore Mainnet urgently, you may need to take additional actions to speed up the process. One option is to submit a pull request (PR) to the relevant repositories with the necessary changes to support the new network. This can help to accelerate the integration process and ensure that the Safe app is fully functional on the new network.
You may also want to reach out to the Safe team directly to discuss your specific requirements and timeline. They may be able to provide additional guidance or support to help you deploy the Safe app on your custom network as quickly and smoothly as possible.