build: Don't set 'latest' link for dev builds

build/upload

@@ -31,8 +31,12 @@ main() {
     ssh -i $SSH_KEY $SSH_ADDRESS ln -snf $archive.sha256 $symlink.sha256
   done
 
+  if git describe --exact-match --match='v*' 2>/dev/null; then
     echo "Creating 'latest' symlink.."
     ssh -i $SSH_KEY $SSH_ADDRESS ln -snf /mnt/radicle/files/releases/$version /mnt/radicle/files/releases/latest
+  else
+    echo "Skipping 'latest' symlink creation for development build."
+  fi
   echo "Done."
 }