test: fix tests that rely on remote urls (#13073)

test/uploads/collections/AdminThumbnailFunction/index.ts

@@ -11,7 +11,8 @@ export const AdminThumbnailFunction: CollectionConfig = {
   slug: adminThumbnailFunctionSlug,
   upload: {
     staticDir: path.resolve(dirname, 'test/uploads/media'),
-    adminThumbnail: () => 'https://payloadcms.com/images/universal-truth.jpg',
+    adminThumbnail: () =>
+      'https://raw.githubusercontent.com/payloadcms/website/refs/heads/main/public/images/universal-truth.jpg',
   },
   fields: [],
 }

test/uploads/collections/AdminUploadControl/components/UploadControl/index.client.tsx

@@ -6,14 +6,18 @@ export const UploadControl = () => {
   const { setUploadControlFile, setUploadControlFileUrl } = useUploadControls()
 
   const loadFromFile = useCallback(async () => {
-    const response = await fetch('https://payloadcms.com/images/universal-truth.jpg')
+    const response = await fetch(
+      'https://raw.githubusercontent.com/payloadcms/website/refs/heads/main/public/images/universal-truth.jpg',
+    )
     const blob = await response.blob()
     const file = new File([blob], 'universal-truth.jpg', { type: 'image/jpeg' })
     setUploadControlFile(file)
   }, [setUploadControlFile])
 
   const loadFromUrl = useCallback(() => {
-    setUploadControlFileUrl('https://payloadcms.com/images/universal-truth.jpg')
+    setUploadControlFileUrl(
+      'https://raw.githubusercontent.com/payloadcms/website/refs/heads/main/public/images/universal-truth.jpg',
+    )
   }, [setUploadControlFileUrl])
 
   return (

test/uploads/e2e.spec.ts

@@ -583,7 +583,7 @@ describe('Uploads', () => {
     const genericUploadImage = page.locator('tr.row-1 .thumbnail img')
     await expect(genericUploadImage).toHaveAttribute(
       'src',
-      'https://payloadcms.com/images/universal-truth.jpg',
+      'https://raw.githubusercontent.com/payloadcms/website/refs/heads/main/public/images/universal-truth.jpg',
     )
   })
 
@@ -1510,7 +1510,7 @@ describe('Uploads', () => {
       const thumbnail = page.locator('#field-withAdminThumbnail div.thumbnail > img')
       await expect(thumbnail).toHaveAttribute(
         'src',
-        'https://payloadcms.com/images/universal-truth.jpg',
+        'https://raw.githubusercontent.com/payloadcms/website/refs/heads/main/public/images/universal-truth.jpg',
       )
     })