📝 docs(code-of-conduct): Update to v2.1, add retaliation section
    
    This commit represents a notable change to the Fedora Code of Conduct,
    including new language that describes our stance against retaliation and
    defining protections for reporters and participants, and addressing the
    issue of false reports.
    
    The work in making this update began in September 2024 by Marie Nordin
    (@riecatnor) who first raised this as an issue and identifying an
    industry trend towards including language about retaliation in a Code
    of Conduct. A proposal was made and went through several rounds of
    revision. The revision represented in this commit was signed off by Red
    Hat Legal (Richard Fontana) in January 2026.
    
    Upon merging to the `main` branch, the Fedora Code of Conduct v2.1 comes
    into effect and will be used as guiding reference for future tickets by
    the Fedora Code of Conduct Committee.
    
    CC, CoC Committee: @jspaleta @jonatoni @dcantrell @ankursinha @chris
    
    CC, Council: @bookwar @churchyard @t0xic0der @amoloney @ryanlerch @pboy
                 @pbokoc @nimbinatus
    
    Fixes CoC#345.
    
    Signed-off-by: Justin Wheeler <jwheel@redhat.com>