Update defense_evasion_secret_scanning_disabled.toml

Author: Aegrah

rules/integrations/github/defense_evasion_secret_scanning_disabled.toml

@@ -21,9 +21,9 @@ references = [
     "https://trigger.dev/blog/shai-hulud-postmortem",
     "https://posthog.com/blog/nov-24-shai-hulud-attack-post-mortem",
 ]
-risk_score = 47
+risk_score = 21
 rule_id = "21c3536f-b674-43db-9bfc-dcf4cf9dcc37"
-severity = "medium"
+severity = "low"
 tags = [
     "Domain: Cloud",
     "Use Case: Threat Detection",