Upgrade to Duktape 2.7.0#40

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cavac wants to merge 3 commits intomamod:masterfrom

Commits on Apr 23, 2022

Upgrade the duktape from 2.3 to 2.7 to fix many known security problems
Rene Schickbauer
committed
Add cavac as an author, fix a spelling mistake
Rene Schickbauer
committed
Bump Duktape.pm version to match c library version
Rene Schickbauer
committed