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
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