relnotes: add "Platform Support" as a header

lolbinarycat · web-flow · commit db68dcca2a32 · 2025-06-20T11:09:02.000-05:00
diff --git a/src/release/release-notes.md b/src/release/release-notes.md
@@ -40,6 +40,7 @@ The release note text is automatically pulled in subsequent steps, and should us
 * Rustdoc
 * Language
 * Compiler
+* Platform Support
 * Internal Changes
 * Other
 
