[2.4.0] Checkmk Werk 17097 created: Increase RSA key size for Agent Controller's client TLS certificate

[//]: # (werk v2) # Increase RSA key size for Agent Controller's client TLS certificate key | value ---------- | --- date | 2024-10-17T08:25:13+00:00 version | 2.4.0b1 class | feature edition | cre component | checks level | 1 compatible | yes The Agent Controller now uses 4096-bit RSA keys for the TLS certificates required for mutual TLS authentication. This change only affects newly generated certificates for new connections. Existing certificates remain unchanged and will continue to be accepted.