Fix pipeline 1321185

What does this MR do and why?

1. Fix failed job: rspec unit pg14 7/28
   Relate Upstream MR: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/90907/diffs#7062986f9fa8c3e1dc00a64a1979508eeac6bc0e_5_5

   Failures:
     1) EmailsHelper#header_logo there is a brand item with a logo that is a SVG file returns the default header logo
       Failure/Error: expect(header_logo).to match(default_header_logo)
         expected "<img alt=\"Jihu GitLab\" src=\"http://test.host/images/mailers/gitlab_logo.png\" width=\"55\" height=\"97\" />" to match /<img alt="Jihu GitLab" src="\/images\/mailers\/gitlab_logo\.(?:gif|png)" width="\d+" height="\d+" \/>/
         Diff:
         @@ -1 +1 @@
         -/<img alt="Jihu GitLab" src="\/images\/mailers\/gitlab_logo\.(?:gif|png)" width="\d+" height="\d+" \/>/
         +"<img alt=\"Jihu GitLab\" src=\"http://test.host/images/mailers/gitlab_logo.png\" width=\"55\" height=\"97\" />"
       # ./spec/helpers/emails_helper_spec.rb:248:in `block (5 levels) in <main>'

2. No longer skip branches_spec.rb as it has been fixed in Upstream MR

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