website: replace login card with png (#6911)

* website: replace login card with png

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* Optimised images with calibre/image-actions

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>
Co-authored-by: authentik-automation[bot] <135050075+authentik-automation[bot]@users.noreply.github.com>

website/src/pages/index.jsx

@@ -94,7 +94,7 @@ function Home() {
                         >
                             <img
                                 alt="authentik logo"
-                                src={useBaseUrl("img/landing_login_card.jpg")}
+                                src={useBaseUrl("img/landing_login_card.png")}
                             />
                         </div>
                     </div>