ci(bump): add additional actions script

https://github.com/nofusscomputing/action_bump/issues/5

.github/additional_actions_bump.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+
+echo "[Debug] script - NEW_VERSION=${NEW_VERSION}";
+
+sed -E "s/version: (.+)/version: ${NEW_VERSION}/g" -i galaxy.yml;