Resolve problem with rendering thumbsup emoji

ee/lib/ee/banzai/pipeline/gfm_pipeline.rb

@@ -18,10 +18,16 @@ module EE
             [
               ::Banzai::Filter::EpicReferenceFilter,
               ::Banzai::Filter::IterationReferenceFilter,
-              ::Banzai::Filter::VulnerabilityReferenceFilter,
               *super
             ]
           end
+
+          def filters
+            [
+              *super,
+              ::Banzai::Filter::VulnerabilityReferenceFilter
+            ]
+          end
         end
       end
     end

ee/spec/lib/banzai/filter/vulnerability_reference_filters_spec.rb

@@ -19,6 +19,14 @@ RSpec.describe Banzai::Filter::VulnerabilityReferenceFilter do
     reference_filter(reference, context)
   end
 
+  context '+1 emoji' do
+    let(:reference) { ":+1:" }
+
+    it 'does not link to a reference' do
+      expect(doc(reference).css('a')).to be_empty
+    end
+  end
+
   context 'internal reference' do
     let(:reference) { "+#{vulnerability.id}" }