Upgrade `upload-artifact` action to v4 #220

Job	Run time
bazel-build	1m 41s
mingw-build (--host=x86_64-w64-mingw32)	1m 43s
standard-build (--enable-debug --enable-cuckoo --enable-magic --enable-macho --enable-pb-tests --...	2m 23s
mingw-build (--host=i686-w64-mingw32)	1m 17s
macosx-build	1m 54s
standard-build (--enable-debug --enable-profiling --enable-cuckoo --enable-magic --enable-macho -...	2m 19s
bigendian	11m 23s
	22m 40s

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