Update clang-sys to 1.3.1

Test: cd external/rust/crates && atest --host -c
Change-Id: Icb1706e6da583698ed05663a1dbd5ec10bd00593
diff --git a/Cargo.toml b/Cargo.toml
index 29bf4e5..3f4fe6d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,16 +3,15 @@
 # When uploading crates to the registry Cargo will automatically
 # "normalize" Cargo.toml files for maximal compatibility
 # with all versions of Cargo and also rewrite `path` dependencies
-# to registry (e.g., crates.io) dependencies
+# to registry (e.g., crates.io) dependencies.
 #
-# If you believe there's an error in this file please file an
-# issue against the rust-lang/cargo repository. If you're
-# editing this file be aware that the upstream Cargo.toml
-# will likely look very different (and much more reasonable)
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
 
 [package]
 name = "clang-sys"
-version = "1.2.2"
+version = "1.3.1"
 authors = ["Kyle Mayes <kyle@mayeses.com>"]
 build = "build.rs"
 links = "clang"
@@ -22,7 +21,7 @@
 license = "Apache-2.0"
 repository = "https://github.com/KyleMayes/clang-sys"
 [package.metadata.docs.rs]
-features = ["clang_11_0", "runtime"]
+features = ["clang_13_0", "runtime"]
 [dependencies.glob]
 version = "0.3"
 
@@ -39,6 +38,8 @@
 [features]
 clang_10_0 = ["clang_9_0"]
 clang_11_0 = ["clang_10_0"]
+clang_12_0 = ["clang_11_0"]
+clang_13_0 = ["clang_12_0"]
 clang_3_5 = []
 clang_3_6 = ["clang_3_5"]
 clang_3_7 = ["clang_3_6"]