[2.3.0] Checkmk Werk 16497 created: agent_aws: Use proxy for connections to 'STS' client

[//]: # (werk v2) # agent_aws: Use proxy for connections to 'STS' client key | value ---------- | --- date | 2024-03-07T09:45:40+00:00 version | 2.3.0b2 class | fix edition | cre component | checks level | 1 compatible | yes Previously, if configured, proxy was used to connect to all clients except for the 'STS' client. This led to a crash in the agent if 'STS' client was only accessible via proxy. Now, the configured proxy will be used for the 'STS' client as well.