Bump bundled libarchive version to 3.5.2

- Update bunlded libarchive version used on Windows/Mac
- Enable requested zstd support while we are at it. Closes #211

dependencies/libarchive-3.5.2/contrib/oss-fuzz/oss-fuzz-build.sh

@@ -0,0 +1,16 @@
+# build the project
+./build/autogen.sh
+./configure
+make -j$(nproc) all
+
+# build seed
+cp $SRC/libarchive/contrib/oss-fuzz/corpus.zip\
+       	$OUT/libarchive_fuzzer_seed_corpus.zip
+
+# build fuzzer(s)
+$CXX $CXXFLAGS -Ilibarchive \
+    $SRC/libarchive/contrib/oss-fuzz/libarchive_fuzzer.cc \
+     -o $OUT/libarchive_fuzzer $LIB_FUZZING_ENGINE \
+    .libs/libarchive.a -Wl,-Bstatic -lbz2 -llzo2  \
+    -lxml2 -llzma -lz -lcrypto -llz4 -licuuc \
+    -licudata -Wl,-Bdynamic