Drop deprecated `.accordion-button` remaining usage (#42488)

diff --git a/js/tests/unit/collapse.spec.js b/js/tests/unit/collapse.spec.js
index fddea9c01fb1ba18d3a2176d796c5c84ad214858..c84300fe50aff0b950f47e438ebbdc32b0031310 100644 (file)
--- a/js/tests/unit/collapse.spec.js
+++ b/js/tests/unit/collapse.spec.js
@@ -316,7 +316,7 @@ describe('Collapse', () => {
           '<div class="accordion" id="accordionExample">',
           '  <div class="accordion-item">',
           '    <h2 class="accordion-header">',
-          '      <button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">',
+          '      <button type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">',
           '        Accordion Item #1',
           '      </button>',
           '    </h2>',