I read similar topic somewhere in the forum and I saw a comment by NotAtether that got me hieve a sigh of relief about how this thread will soon be overcomed.
Bitcoin developers are researching address types that use quantum-resistant signatures. Once those are created, you should be able to simply move your coins to such an address to mitigate the quantum computer threat in the future.
I could also ask if quantum network will be a threat to lighting network also?