Per accessibility feedback, add a role='application' attribute on the exam code span

edx_proctoring/templates/proctoring/seq_proctored_exam_instructions.html

@@ -27,7 +27,7 @@
       {% endblocktrans %}
     </p>
     <p>
-      <span class="proctored-exam-code">{{exam_code}}</span>&nbsp;<button class='proctored-exam-select-code'>Click to select exam code</button>
+      <span class="proctored-exam-code" role="application">{{exam_code}}</span>&nbsp;<button class='proctored-exam-select-code'>Click to select exam code</button>
     </p>
     <p>
       {% blocktrans %}