4.1.5v1 for Joomla! 4.1.5

@heelc29

A short general information on the naming of files:

New German Joomla! Installations:

Joomla_0.0.0-Stable-Full_Package_German.[zip|tar.gz|tar.bz2]

Add German Language to existing Joomla! Installations:

de-[AT|CH|DE|LI|LU]_joomla_lang_full_0.0.0v[1|2|...].zip

[4.1] Update Sites rebuild by @heelc29 in #2470
[4.1] fix typo #2456 by @tecpromotion in #2462
Update and rename ISSUE_TEMPLATE.md to ISSUE_TEMPLATE.yaml by @tecpromotion in #2473
re apply changes to the 4.1 branch by @tecpromotion in #2480
allow builds of a specific tag #2441 by @zero-24 in #2481
[4.x] Fix indentation in bump script by @heelc29 in #2482
[4.1] Unified spelling of the word YubiKey by @tecpromotion in #2485
[4.1] unification site section by @heelc29 in #2491
[4.x] sync core by @heelc29 in #2493
[4.x] copyright year core by @heelc29 in #2492
[4.1] order/fix header ini-file by @heelc29 in #2504

Full Changelog: 4.1.4v1...4.1.5v1
Milestone 4.1.5v1: https://github.com/joomlagerman/joomla/milestone/107?closed=1