Expect JSON error instead of type error

spec/lib/gitlab/ci/parsers/accessibility/pa11y_spec.rb

@@ -108,7 +108,7 @@ RSpec.describe Gitlab::Ci::Parsers::Accessibility::Pa11y do
       it "sets error_message" do
         expect { subject }.not_to raise_error
 
-        expect(accessibility_report.error_message).to include('Pa11y parsing failed')
+        expect(accessibility_report.error_message).to include('JSON parsing failed')
         expect(accessibility_report.errors_count).to eq(0)
         expect(accessibility_report.passes_count).to eq(0)
         expect(accessibility_report.scans_count).to eq(0)