Update membership prospectus to SDV specific version
On https://sdv.eclipse.org/become-a-member/, we need to update the link in this section:
To this PDF: [SDV_Prospectus_updated_June2024__2_.pdf](/uploads/f80a6a393c2e7658be826e4705afdd39/SDV_Prospectus_updated_June2024__2_.pdf)
CC @paulinagueorguieva @jharrisj1m
issue