Update libdwarf to 0.12.0 (#6924)

packages/l/libdwarf/xmake.lua

@@ -6,6 +6,7 @@ package("libdwarf")
     add_urls("https://github.com/davea42/libdwarf-code/releases/download/v$(version)/libdwarf-$(version).tar.xz",
              "https://github.com/davea42/libdwarf-code.git")
 
+    add_versions("0.12.0", "444dc1c5176f04d3ebc50341552a8b2ea6c334f8f1868a023a740ace0e6eae9f")
     add_versions("0.11.1", "b5be211b1bd0c1ee41b871b543c73cbff5822f76994f6b160fc70d01d1b5a1bf")
     add_versions("0.11.0", "846071fb220ac1952f9f15ebbac6c7831ef50d0369b772c07a8a8139a42e07d2")
     add_versions("0.10.1", "b511a2dc78b98786064889deaa2c1bc48a0c70115c187900dd838474ded1cc19")