minor bugfix release

this release fixes:

• a more friendly error message if no configuration is found, yet allows to continue with defaults, so that eventual tests and programmatic use is possible.
• client actually uses the configured timeouts for network connections
• unittests are run in randomized order to detect flaky CI/CD infra
• unittests have 3s sleep between to accommodate for overloaded CI/CD infra failing tests because of resource starvation
• github codeql action is now enabled