Fix casing of ASoCCredentials.getAcceptInvalidCerts() for configuration as code compatibility

[Zune01]

Configuration as Code does not work since the getter ASoCCredentials.getacceptInvalidCerts() is misspelled and the configuration fails.
Simply fixing the casing makes it work.

Testing done

I've tested locally and CasC works now on my machine.

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue