These files are mostly test corpora from OSS-Fuzz. So I wouldn't be too bothered, as those are only used with `make check`.Of course, updating to 0.21.2 with its "273 changed files with 70,410 additions and 1,392 deletions"[0] feels rather invasive this late in the Debian release cycle, so maybe a more targeted fix could be extracted.
Some other changes are updates of the copyright year and meson and msvc build files, both have no influence on the Debian build (autotools/make).
I leave it to you to decide about the few remaining changed files. Regards, Tim
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