Add metadata for NetBeans 12.1-beta4
diff --git a/meta/netbeansrelease.json b/meta/netbeansrelease.json
index 1bc6c4d..24677ba 100644
--- a/meta/netbeansrelease.json
+++ b/meta/netbeansrelease.json
@@ -282,6 +282,10 @@
             "26e6ce805bae6d79990354fb9bdc4971228f28ad": {
                 "version": "beta3",
                 "position": "3"
+            },
+            "cade25887c5450e4595fa59e616daee4d2520ee0": {
+                "version": "beta4",
+                "position": "4"
             }
         },
         "releasedate": {