changelog entry

CHANGELOG.md

@@ -14,6 +14,7 @@ Unreleased changes are available as `avenga/couper:edge` container.
 * **Changed**
   * Replaced the JWT library because the former library was no longer maintained ([#612](https://github.com/avenga/couper/pull/612))
   * Routing and [OpenAPI validation](https://docs.couper.io/configuration/block/openapi) now use gorilla/mux ([#614](https://github.com/avenga/couper/pull/614))
+  * Use nested `jwt_signing_profile` block in [`oauth2` block](https://docs.couper.io/configuration/block/oauth2) for `grant_type` `"urn:ietf:params:oauth:grant-type:jwt-bearer"` in absence of `assertion` attribute ([#619](https://github.com/avenga/couper/pull/619))
 
 * **Fixed**
   * Aligned the evaluation of [`beta_oauth2`](https://docs.couper.io/configuration/block/oauth2_ac)/[`oidc`](https://docs.couper.io/configuration/block/oidc) `redirect_uri` to `saml` `sp_acs_url` ([#589](https://github.com/avenga/couper/pull/589))