Description: update BUILD.gn & README.OpenSource for harfbuzz

IssueNo:https://gitee.com/openharmony/third_party_harfbuzz/issues/I4X5GU
Feature or Bugfix: Bugfix
Binary Source:NA
Signed-off-by: Nlancer <haoshuo@huawei.com>

BUILD.gn

@@ -47,9 +47,9 @@ harfbuzz_source = [
   "//third_party/harfbuzz/src/hb-ot-shape-complex-indic.cc",
   "//third_party/harfbuzz/src/hb-ot-shape-complex-khmer.cc",
   "//third_party/harfbuzz/src/hb-ot-shape-complex-myanmar.cc",
+  "//third_party/harfbuzz/src/hb-ot-shape-complex-syllabic.cc",
   "//third_party/harfbuzz/src/hb-ot-shape-complex-thai.cc",
   "//third_party/harfbuzz/src/hb-ot-shape-complex-use.cc",
-  "//third_party/harfbuzz/src/hb-ot-shape-complex-use-table.cc",
   "//third_party/harfbuzz/src/hb-ot-shape-complex-vowel-constraints.cc",
   "//third_party/harfbuzz/src/hb-ot-shape-fallback.cc",
   "//third_party/harfbuzz/src/hb-ot-shape-normalize.cc",

README.OpenSource

@@ -3,9 +3,9 @@
         "Name"                  : "harfbuzz",
         "License"               : "MIT License",
         "License File"          : "COPYING",
-        "Version Number"        : "2.7.2",
+        "Version Number"        : "2.8.1",
         "Owner"                 : "liyujia4@huawei.com",
-        "Upstream URL"          : "https://github.com/harfbuzz/harfbuzz/releases/tag/2.7.2",
+        "Upstream URL"          : "https://github.com/harfbuzz/harfbuzz/releases/tag/2.8.1",
         "Description"           : "HarfBuzz is a text shaping engine. It primarily supports OpenType, but also Apple Advanced Typography. HarfBuzz is used in Android, Chrome, ChromeOS, Firefox, GNOME, GTK+, KDE, LibreOffice, OpenJDK, PlayStation, Qt, XeTeX, and other places."
     }
 ]
\ No newline at end of file