Move release note entry for #4969

Author: marcphilipp

documentation/src/docs/asciidoc/release-notes/release-notes-5.14.0-RC1.adoc

@@ -42,7 +42,9 @@ repository on GitHub.
 [[release-notes-5.14.0-RC1-junit-jupiter-deprecations-and-breaking-changes]]
 ==== Deprecations and Breaking Changes
 
-* ❓
+* `MediaType.APPLICATION_JSON_UTF_8` is now deprecated in favor of using
+  `MediaType.APPLICATION_JSON`, since the industry considers UTF-8 to be the implicit
+  default encoding for the `application/json` media type.
 
 [[release-notes-5.14.0-RC1-junit-jupiter-new-features-and-improvements]]
 ==== New Features and Improvements

documentation/src/docs/asciidoc/release-notes/release-notes-6.0.0.adoc

@@ -283,9 +283,6 @@ guidance on upgrading from JUnit 5.x.y to 6.0.0.
 * For consistency with test methods, `@Nested` classes declared in the same enclosing
   class or interface are now ordered in a deterministic but intentionally nonobvious
   way.
-* `MediaType.APPLICATION_JSON_UTF_8` is now deprecated in favor of using
-  `MediaType.APPLICATION_JSON`, since the industry considers UTF-8 to be the implicit
-  default encoding for the `application/json` media type.
 * `org.junit.jupiter.api.extension.MediaType` is now deprecated in favor of the new
   `org.junit.jupiter.api.MediaType`.
 * The `publishFile(...)` methods in `TestReporter` which accept an