tests: replace banned password in step

Signed-off-by: nabim777 <nabinalemagar019@gmail.com>

Author: nabim777

tests/e2e-playwright/specs/shares/link.spec.ts

@@ -966,7 +966,7 @@ test.describe('link', () => {
       stepUser: 'Alice',
       resource: 'lorem.txt',
       linkName: 'Unnamed link',
-      newPassword: 'ownCloud-1'
+      newPassword: '12345678'
     })
     // Then "Alice" should see an error message
     //   """