Merge branch 'Externalize-strings-in-milestones/_header_title.html.haml' into 'master'

Externalize strings in milestones/_header_title.html.haml

See merge request gitlab-org/gitlab!58300

app/views/groups/milestones/_header_title.html.haml

 - breadcrumb_title @milestone.title
-- add_to_breadcrumbs "Milestones", group_milestones_path(@group)
+- add_to_breadcrumbs _("Milestones"), group_milestones_path(@group)

changelogs/unreleased/Externalize-strings-in-milestones-_header_title-html-haml.yml

+---
+title: Externalize strings in milestones/_header_title.html.haml
+merge_request: 58300
+author: nuwe1
+type: other