[y] Add CI check to not allow characters of the kind ©
We would like to add a check to the CI to avoid characters like for example ©
In file headers Always use (C) instead of (©).
- Target version changed from SLE 15 SP3 to future
Technically this is wrong statement about copyright, https://www.compart.com/en/unicode/U+00A9 and it's not only unicode, but even utf-8, not utf-16. So I don't see any good reason to do
In file headers Always use (C) instead of (©)., but validate that there no non-unicode, or even no non-utf-8 sybmols, that what we could definitely do.
file -bi %filename% can be used to validate charset.
https://github.com/os-autoinst/os-autoinst-distri-opensuse/commit/395183a8d19e5200e2760e9f3b9c6877b60792e7 can be used to test the way we detect not allowed symbols.