doc: update blockList stability status to release candidate

Signed-off-by: arbinger <alphaleadershipyt@protonmail.com>
PR-URL: https://github.com/nodejs/node/pull/63050
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ethan Arrowood <ethan@arrowood.dev>

doc/api/net.md

@@ -183,7 +183,7 @@ added:
 
 ### `blockList.fromJSON(value)`
 
-> Stability: 1 - Experimental
+> Stability: 1.2 - Release candidate
 
  <!-- YAML
 added:
@@ -207,7 +207,7 @@ blockList.fromJSON(JSON.stringify(data));
 
 ### `blockList.toJSON()`
 
-> Stability: 1 - Experimental
+> Stability: 1.2 - Release candidate
 
  <!-- YAML
 added: