[Bug]: Regex for LogAnalyzer to filter error messages is case-sensitive

[akhil-rane]

Checklist

• I've searched for similar issues and couldn't find anything matching
• I've included steps to reproduce the behavior

Affected Components

• K8sGPT (CLI)
• K8sGPT Operator

K8sGPT Version

v0.3.23

Kubernetes Version

v1.25.0

Host OS and its Version

MacOS

Steps to reproduce

1. Simulate log error messages where failure messages start with uppercase. Something like Failed/Error/Exception
2. Run k8sgpt cli with Log filter

Expected behaviour

k8sgpt should be able to filter error messages in logs starting with uppercase and solution should be recommended

Actual behaviour

k8sgpt is not able to filter error messages in logs starting with uppercase. The sample error message is as follows

E1218 22:38:55.713036       1 static_autoscaler.go:280] Failed to refresh cloud provider config: AccessDenied

Additional Information

No response