When running update-copyright.py --this-year, I've encountered various
failures, this patch works around those.

2025-01-02  Jakub Jelinek  <jakub@redhat.com>

	* update-copyright.py (GCCFilter): Ignore gen-evolution.awk and
	gen-cxxapi-file.py.
	(TestsuiteFilter): Ignore spec-example-4.sarif.
	(LibCppFilter): Ignore uname2c.h.