[FIX] hr_skills: fix pseudo-element position

Prior to this commit, the pseudo-element in the employee resume tab was
not aligned on every media-query, making it invisible on large devices.

This commits ensure the visibility of the element no matter what device
you are using.

Task-3474635
Part of task-3326263

closes odoo/odoo#137928

X-original-commit: 036e6cdf1deb383c24967618f04070f97dd872e7
Signed-off-by: Sofie Gvaladze (sgv) <sgv@odoo.com>
Signed-off-by: Chrysanthe Gomrée (chgo) <chgo@odoo.com>

addons/hr_skills/static/src/fields/resume_one2many.scss

@@ -23,7 +23,11 @@
                 content: "";
 
                 @include media-breakpoint-up(lg, $o-extra-grid-breakpoints) {
-                    left: ($o-hrs-timeline-dot-size * .5 + o-to-rem($o-horizontal-padding) * 2 - o-to-rem($border-width))
+                    left: ($o-hrs-timeline-dot-size * .5 + o-to-rem(map-get($spacers, 4))  - o-to-rem($border-width))
+                }
+
+                @include media-breakpoint-up(xxl, $o-extra-grid-breakpoints) {
+                    left: ($o-hrs-timeline-dot-size * .5 + o-to-rem($o-horizontal-padding)  - o-to-rem($border-width))
                 }
             }
         }