feat: replace Cheaha logo with updated vector SVG
The old logo used an embedded base64 PNG raster image.
Gitlab will be upgraded from 18.2.8 to 18.9.5 Thursday evening (20260416). Expect services to be down starting 6:00PM CT (1800). See the following release notes:
Gitlab 18.3 Gitlab 18.4 Gitlab 18.5 Gitlab 18.6 Gitlab 18.7 Gitlab 18.8 Gitlab 18.9The old logo used an embedded base64 PNG raster image.