Remove unnecessary css class

- remove gl-icon

app/views/shared/boards/components/sidebar/_assignee.html.haml

@@ -23,7 +23,7 @@
         %button.dropdown-menu-toggle.js-user-search.js-author-search.js-multiselect.js-save-user-data.js-issue-board-sidebar{ type: 'button', ref: 'assigneeDropdown', data: board_sidebar_user_data,
           ":data-issuable-id" => "issue.iid" }
           = dropdown_options[:title]
-          = icon("chevron-down")
+          = sprite_icon('chevron-down', css_class: "dropdown-menu-toggle-icon gl-top-3")
         .dropdown-menu.dropdown-select.dropdown-menu-user.dropdown-menu-selectable.dropdown-menu-author
           = dropdown_title("Assign to")
           = dropdown_filter("Search users")

app/views/shared/boards/components/sidebar/_due_date.html.haml

@@ -24,7 +24,7 @@
         %button.dropdown-menu-toggle.js-due-date-select.js-issue-boards-due-date{ type: 'button',
           data: { toggle: 'dropdown', field_name: "issue[due_date]", ability_name: "issue" } }
           %span.dropdown-toggle-text= _("Due date")
-          = icon('chevron-down')
+          = sprite_icon('chevron-down', css_class: "dropdown-menu-toggle-icon gl-top-3")
         .dropdown-menu.dropdown-menu-due-date
           = dropdown_title(_('Due date'))
           = dropdown_content do

app/views/shared/boards/components/sidebar/_labels.html.haml

@@ -27,7 +27,7 @@
           data: label_dropdown_data(@project, namespace_path: @namespace_path, field_name: "issue[label_names][]") }
           %span.dropdown-toggle-text
             {{ labelDropdownTitle }}
-          = icon('chevron-down')
+          = sprite_icon('chevron-down', css_class: "dropdown-menu-toggle-icon gl-top-3")
         .dropdown-menu.dropdown-select.dropdown-menu-paging.dropdown-menu-labels.dropdown-menu-selectable.dropdown-extended-height
           = render partial: "shared/issuable/label_page_default"
           - if can?(current_user, :admin_label, current_board_parent)

app/views/shared/boards/components/sidebar/_milestone.html.haml

@@ -21,7 +21,7 @@
           ":data-issuable-id" => "issue.iid",
           ":data-project-id" => "issue.project_id" }
           = _("Milestone")
-          = icon("chevron-down")
+          = sprite_icon('chevron-down', css_class: "dropdown-menu-toggle-icon gl-top-3")
         .dropdown-menu.dropdown-select.dropdown-menu-selectable
           = dropdown_title(_("Assign milestone"))
           = dropdown_filter(_("Search milestones"))

changelogs/unreleased/224509-replace-board-sidebar-chevron.yml

+---
+title: Replace chevron-down fa-icon in board sidebar
+merge_request: 46075
+author:
+type: other

ee/app/assets/javascripts/vue_shared/components/sidebar/epics_select/dropdown_button.vue

@@ -34,6 +34,6 @@ export default {
     data-toggle="dropdown"
   >
     <span class="dropdown-toggle-text" :class="toggleTextClass">{{ buttonText }}</span>
-    <gl-icon name="chevron-down" class="dropdown-menu-toggle-icon" />
+    <gl-icon name="chevron-down" class="dropdown-menu-toggle-icon gl-top-3" />
   </button>
 </template>