message: CHANGELOG: add OAuth env parameter and SignInPage changes
diff: @@ -10,14 +10,22 @@ If you encounter issues while upgrading to a newer version, don't hesitate to re
  ### @backstage/catalog-backend
  -- Fixed an issue with duplicated location logs. Applying the database migrations from this fix will clear the existing migration logs. https://github.com/spotify/backstage/pull/1836
  +- Fixed an issue with duplicated location logs. Applying the database migrations from this fix will clear the existing migration logs. [#1836](https://github.com/spotify/backstage/pull/1836)
  +
  +### @backstage/auth-backend
  +
  +- OAuth redirect URLs no longer receive the `env` parameter, as it is now passed through state instead. This will likely require a reconfiguration of the OAuth app, where a redirect URL like `http://localhost:7000/auth/google/handler/frame?env=development` should now be configured as `http://localhost:7000/auth/google/handler/frame`. [#1812](https://github.com/spotify/backstage/pull/1812)
  +
  +### @backstage/core
  +
  +- `SignInPage` props have been changed to receive a list of provider objects instead of simple string identifiers for all but the `'guest'` and `'custom'` providers. This opens up for configuration of custom providers, but may break existing configurations. See [packages/app/src/App.tsx](https://github.com/spotify/backstage/blob/032ba401af36a760efdac41668d7000ccf09bc57/packages/app/src/App.tsx#L36) and [packages/app/src/identityProviders.ts](https://github.com/spotify/backstage/blob/032ba401af36a760efdac41668d7000ccf09bc57/packages/app/src/identityProviders.ts#L24) for how to bring back the existing providers. [#1816](https://github.com/spotify/backstage/pull/1816)
  ## v0.1.1-alpha.17
  ### @backstage/techdocs-backend
  -- The techdocs backend now requires more configuration to be supplied when creating the router. See [packages/backend/src/plugins/techdocs.ts](https://github.com/spotify/backstage/blob/0201fd9b4a52429519dd59e9184106ba69456deb/packages/backend/src/plugins/techdocs.ts#L42) for an example. https://github.com/spotify/backstage/pull/1736
  +- The techdocs backend now requires more configuration to be supplied when creating the router. See [packages/backend/src/plugins/techdocs.ts](https://github.com/spotify/backstage/blob/0201fd9b4a52429519dd59e9184106ba69456deb/packages/backend/src/plugins/techdocs.ts#L42) for an example. [#1736](https://github.com/spotify/backstage/pull/1736)
  ### @backstage/cli
  -- The `create-app` command was moved out from the CLI to a standalone package. It's now invoked with `npx @backstage/create-app` instead. https://github.com/spotify/backstage/pull/1745
  +- The `create-app` command was moved out from the CLI to a standalone package. It's now invoked with `npx @backstage/create-app` instead. [#1745](https://github.com/spotify/backstage/pull/1745)
  