[FIX] hr_skills: provide visual feedback on link

This commit fixes an accessibility issue about a link which does not
provide any visual feedback to the user who would hover it.

Prior to this commit, this link did not provide any visual feedback,
due to the lack of `cursor-pointer` BS class or `btn-link` styling.

The easiest way to fix this is to add a `cursor-pointer` class to the
link. We could have turned the link into a button with `btn btn-link`
classes but this would requires more layout and design adjustments.

task-3573737

closes odoo/odoo#140148

Signed-off-by: Sofie Gvaladze (sgv) <sgv@odoo.com>

addons/hr_skills/static/src/fields/skills_one2many/skills_one2many.xml

@@ -9,7 +9,7 @@
         </xpath>
         <xpath expr="//table" position="before">
             <div name="skills_header" class="text-uppercase fw-bolder small ms-3" style="margin-top: 2rem; box-shadow: 0 1px 0 #e6e6e6">
-                Skills <a t-on-click="openSkillsReport" class="fa fa-line-chart ms-1" ></a>
+                Skills <a t-on-click="openSkillsReport" class="fa fa-line-chart ms-1 cursor-pointer"/>
             </div>
         </xpath>
         <xpath expr="//table" position="after">