[devsec] Make it possible to trigger release manually (#2561)

## Summary
Make it possible to trigger release manually. I was missing the `inputs:` field previously

## How was it tested?
Need to check it in first.

## Is this change backwards-compatible?
Yes

Author: loreto

.github/workflows/release.yml

@@ -3,11 +3,12 @@ name: release
 on:
   # Build/Release on demand
   workflow_dispatch:
-    is_snapshot_release:
-      description: "Release Snapshot?"
-      required: true
-      default: false
-      type: boolean
+    inputs:
+      is_snapshot_release:
+        description: "Release Snapshot?"
+        required: false
+        default: false
+        type: boolean
   # Nightly releases
   schedule:
     - cron: "45 8 * * 1-5"