update svg logo (#622)

Fixes: #621 

To test, use a Windows or Android device, and go to:

https://cfpb.github.io/design-system-react/pr-previews/pr-622/?path=/story/components-draft-headers--default&globals=responsivePreview:all

What I see on Android 
<img width="1080" height="2340" alt="Screenshot_20260706_100804_Chrome"
src="https://github.com/user-attachments/assets/78bd7449-2ee4-4e28-9e13-6ffe9c7c4959"
/>
<img width="1080" height="2340" alt="Screenshot_20260706_100756_Chrome"
src="https://github.com/user-attachments/assets/53644613-5832-4fb0-bf25-8ae638f5fb8f"
/>


What is seen in Windows 
<img width="2707" height="1517" alt="image"
src="https://github.com/user-attachments/assets/27e1def0-7c14-4a18-8621-f93489ffe55d"
/>

Author: flacoman91