Update Membership Prospectus to 2025-02 version

We have a new version of the Eclipse Foundation membership prospectus to add to eclipse.org/membership/prospectus/

Can we replace the PDF at https://www.eclipse.org/membership/documents/membership-prospectus.pdf with this one: Membership_Prospectus-2025-02.pdf

Going forward, we'll need to update the HTML version of the prospectus to match the latest edition, but since we need some edits do be done quickly, please limit the scope of the edits to the HTML version to what is highlighted in this doc (track changes) https://docs.google.com/document/d/1Xcn1jKe6YMY2fMyzs0JcrjLnUl3ottWD49cOAtg5Kxg/edit?usp=sharing

cc @croundy