Add support for Grafana Service Account Token

[patcain-34]

Description

Add support for detecting Grafana Service Account Tokens

Preferred Solution

Suggested Regex:

glsa_[A-Za-z0-9]{32}_[A-Fa-f0-9]{8}

Additional Context

Grafana Service Account Tokens have the structure: glsa_[A-Za-z0-9]{32}_[A-Fa-f0-9]{8}. Adding this will expand TruffleHog's coverage for key detection, improving security auditing for users leveraging Grafana monitoring services.

References

None currently.