Merge pull request #7879 from ammubhave/add_zstd_to_boost

boost: Add zstd as a dependency to boost-iostream

libs/boost/Makefile

@@ -342,7 +342,7 @@ $(eval $(call DefineBoostLibrary,date_time,,))
 $(eval $(call DefineBoostLibrary,fiber,coroutine filesystem,,!boost-fiber-exclude))
 $(eval $(call DefineBoostLibrary,filesystem,system,))
 $(eval $(call DefineBoostLibrary,graph,regex,))
-$(eval $(call DefineBoostLibrary,iostreams,,+zlib +liblzma +libbz2))
+$(eval $(call DefineBoostLibrary,iostreams,,+zlib +liblzma +libbz2 +zstd))
 $(eval $(call DefineBoostLibrary,locale,system,$(ICONV_DEPENDS),BUILD_NLS))
 $(eval $(call DefineBoostLibrary,log,system chrono date_time thread filesystem regex,))
 $(eval $(call DefineBoostLibrary,math,,))