Fix fuzz seed_corpora for test filename rename
Updates
bmp: test/data/*.bmp ../bmpsuite_corpus/*.bmp
cbor: test/data/*.cbor
-gif: test/data/*.gif test/data/artificial/*.gif
-gzip: test/data/*.gz test/data/artificial/*.gz
+gif: test/data/*.gif test/data/artificial-gif/*.gif
+gzip: test/data/*.gz
json: test/data/*.json ../rapidjson_corpus/* ../simdjson_corpus/* ../JSONTestSuite/test_*/*.json
-png: test/data/*.png ../pngsuite_corpus/*.png
+png: test/data/*.png test/data/artificial-png/*.png ../pngsuite_corpus/*.png
wbmp: test/data/*.wbmp
zlib: test/data/*.zlib
