Add severity to issue output

The spec requires these to be one of info, normal, or critical

Author: gdiggs

lib/cc/engine/bundler_audit.rb

@@ -5,6 +5,11 @@ module CC
   module Engine
     class BundlerAudit
       GemfileLockNotFound = Class.new(StandardError)
+      SEVERITIES = {
+        "High" => "critical",
+        "Low" => "info",
+        "Medium" => "normal",
+      }
 
       def initialize(directory: , io: , engine_config: )
         @directory = directory
@@ -66,6 +71,7 @@ def issue_from_raw(raw_issue)
           remediation_points: remediation_points(
             raw_issue_hash['Version'], raw_issue_hash['Solution']
           ),
+          severity: SEVERITIES[raw_issue_hash["Criticality"]],
           type: 'Issue',
         }
       end

spec/cc/engine/bundler_audit_spec.rb

@@ -37,6 +37,7 @@ module CC::Engine
             lines: { begin: nil, end: nil }
           },
           remediation_points: 500_000,
+          severity: "normal",
           type: "Issue",
         }.to_json
         io = StringIO.new