Prepare release notes for 5.9.1

Author: sbrannen

documentation/src/docs/asciidoc/release-notes/release-notes-5.9.1.adoc

@@ -1,9 +1,13 @@
 [[release-notes-5.9.1]]
 == 5.9.1
 
-*Date of Release:* ❓
+*Date of Release:* September 20, 2022
 
-*Scope:* Minor enhancements and bug fixes since 5.9.0
+*Scope:*
+
+* New `@EnabledInNativeImage` and `@DisabledInNativeImage` annotations for testing in
+  GraalVM native images.
+* Minor bug fixes and enhancements since 5.9.0
 
 For a complete list of all _closed_ issues and pull requests for this release, consult the
 link:{junit5-repo}+/milestone/63?closed=1+[5.9.1] milestone page in the JUnit repository
@@ -19,14 +23,6 @@ on GitHub.
 * Execution in GraalVM native images no longer requires `--initialize-at-build-time` for
   `OpenTestReportGeneratingListener`.
 
-==== Deprecations and Breaking Changes
-
-* ❓
-
-==== New Features and Improvements
-
-* ❓
-
 
 [[release-notes-5.9.1-junit-jupiter]]
 === JUnit Jupiter
@@ -45,26 +41,13 @@ on GitHub.
 * Assertion failures thrown from methods with applied timeouts using `ThreadMode.SEPARATE`
   are now properly reported.
 
-==== Deprecations and Breaking Changes
-
-* ❓
-
 ==== New Features and Improvements
 
 * New `@EnabledInNativeImage` and `@DisabledInNativeImage` annotations for enabling and
   disabling tests within a GraalVM native image.
 
+
 [[release-notes-5.9.1-junit-vintage]]
 === JUnit Vintage
 
-==== Bug Fixes
-
-* ❓
-
-==== Deprecations and Breaking Changes
-
-* ❓
-
-==== New Features and Improvements
-
-* ❓
+No changes.