[22] Update openjdk-22 with copyright generator changes

Pushkar Kulkarnirequested to merge
pushkarnk/openjdk:openjdk-22-cr into openjdk-22

I found the previous set of changes [1] to copyright generator missing from openjdk-22. Added them as well as a new change to capture the version from the debian/rules file.

[1] pushkarnk/openjdk@1738b8ef

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