message: update changeset with example and change minor to patch
diff: ---
  -'@backstage/core-components': minor
  +'@backstage/core-components': patch
  ---
  -Added option to pass additional headers in ProxiedSignInPage
  +Added option to pass additional headers to `<ProxiedSignInPage />`
  +
  +The <ProxiedSignInPage /> supports signing into Backstage with a Sign Page coming from an external provider e.g. Google IAP, AWS ALB, etc. The component makes requests to a single endpoint `/refresh` on the auth backend to fetch the logged in user session.
  +
  +If the provider in auth backend expects additional headers such as `x-provider-token`, there is now a way to configure that in `ProxiedSignInPage` using the optional `getHeaders` prop.
  +
  +Example -
  +
  +```tsx
  +const app = createApp({
  + // ...
  + components: {
  + SignInPage: props => (
  + <ProxiedSignInPage
  + {...props}
  + provider="my-custom-provider"
  + getHeaders={async () => {
  + const someValue = await someFn();
  + return { 'x-some-key': someValue };
  + }}
  + />
  + ),
  + },
  + // ...
  +});
  +```
  