fix: workaround for avro-cpp fmt formatter on Windows instead of pinning

Instead of pinning to an older fmt version (which creates version mismatch
between platforms), we implement a workaround that provides a const-correct
fmt::formatter<avro::Name> specialization on Windows.

conda-forge's avro-cpp has an outdated formatter without const, while
fmt v11+ requires const. We define the correct version first and suppress
the redefinition warning, ensuring compatibility with latest fmt across
all platforms.

Also regenerated NOTICE file to include avro-cpp license.

Signed-off-by: Krzysztof Milde <Krzysztof.Milde@Point72.com>

Author: mildek