Protect from invalid github org response

Attempt to fix #287

app/jobs/attempt_project_repo_mapping_job.rb

@@ -67,6 +67,15 @@ class AttemptProjectRepoMappingJob < ApplicationJob
       .get("https://api.github.com/users/#{@user.github_username}/orgs")
 
     Rails.logger.info "GitHub orgs response: #{response.body}"
-    JSON.parse(response.body)
+    
+    return [] unless response.status.success?
+    
+    parsed_response = JSON.parse(response.body)
+    return [] unless parsed_response.is_a?(Array)
+    
+    parsed_response
+  rescue JSON::ParserError => e
+    Rails.logger.error "Failed to parse GitHub orgs response: #{e.message}"
+    []
   end
 end