Update Geo Empty State SVG

Current emtpy state svg for Geo does not
align with Pajama's guidelines.

This MR adds an updated SVG to correct this.

ee/app/views/admin/geo/designs/index.html.haml

 - page_title _('Geo Designs')
 
-#js-geo-designs{ data: { "geo-svg-path" => image_path('illustrations/gitlab_geo.svg'),
+#js-geo-designs{ data: { "geo-svg-path" => image_path('illustrations/empty-state/geo-empty.svg'),
   "issues-svg-path" => image_path('illustrations/issues.svg'),
   "geo-troubleshooting-link" => help_page_path('administration/geo/replication/troubleshooting.html'),
   "design-management-link" => help_page_path('user/project/issues/design_management.html') } }

ee/app/views/shared/empty_states/_geo.html.haml

 .row.empty-state
   .col-12
     .svg-content
-      = image_tag 'illustrations/gitlab_geo.svg'
+      = image_tag 'illustrations/empty-state/geo-empty.svg'
   .col-12
     .text-content
       %h4.text-center= _('Discover GitLab Geo')

ee/spec/frontend/geo_designs/mock_data.js

 import { convertObjectPropsToCamelCase } from '~/lib/utils/common_utils';
 
-export const MOCK_GEO_SVG_PATH = 'illustrations/gitlab_geo.svg';
+export const MOCK_GEO_SVG_PATH = 'illustrations/empty-state/geo-empty.svg';
 
 export const MOCK_ISSUES_SVG_PATH = 'illustrations/issues.svg';