Describe encryption between internal Altinn servers/VMs/containers

https://pedia.altinn.cloud/sec/security-architecture/data-security/encryption-transit/ (or a page referred to from this page) should be updated with information on how information is encrypted between Altinn's servers/VMs/containers. Once approved, relevant parts should be migrated from pedia to docs.

Start with the linked Pedia encryption-in-transit page and trace any page it refers to for information about encryption between Altinn servers, VMs, and containers. Document the verified architecture details there, then, after approval, migrate the relevant content from Pedia to the Altinn Studio docs. Done means the information is approved and available in the docs rather than only in Pedia.

Written by the indexing model from the issue text.