Fix release tag regex

Author: TimLariviere

.github/workflows/release.yml

@@ -1,7 +1,7 @@
 name: Release
 on:
   push:
-    tags: ['[0-9]+.[0-9]+.[0-9]+(-.*)?']
+    tags: ['[0-9]+.[0-9]+.[0-9]+', '[0-9]+.[0-9]+.[0-9]+-preview.[0-9]+']
     paths-ignore: [ 'docs/**' ]
 
 permissions: write-all