downloads: upgrade LLVM toolchains 16.0.2 -> 16.0.3

Author: indygreg

pythonbuild/downloads.py

@@ -157,22 +157,22 @@
         "version": "14.0.3+20220508",
     },
     "llvm-16-x86_64-linux": {
-        "url": "https://github.com/indygreg/toolchain-tools/releases/download/toolchain-bootstrap%2F20230430/llvm-16.0.2+20230430-gnu_only-x86_64-unknown-linux-gnu.tar.zst",
-        "size": 226085814,
-        "sha256": "b5d5a0a486bb28ea7057189ecb797c178eeca8acaf93e895358eac450ee6d930",
-        "version": "16.0.2+20230430",
+        "url": "https://github.com/indygreg/toolchain-tools/releases/download/toolchain-bootstrap%2F20230506/llvm-16.0.3+20230506-gnu_only-x86_64-unknown-linux-gnu.tar.zst",
+        "size": 226142860,
+        "sha256": "5fbddd82919fb855684aa79c4f862248e1ceda9334259062803965e5d3d264d4",
+        "version": "16.0.3+2023506",
     },
     "llvm-aarch64-macos": {
-        "url": "https://github.com/indygreg/toolchain-tools/releases/download/toolchain-bootstrap%2F20230430/llvm-16.0.2+20230430-aarch64-apple-darwin.tar.zst",
-        "size": 116377876,
-        "sha256": "c4adc46fc9e3f244bcabeb9610543e3b9ba3b795ba12b2bbbe61642ff0effb59",
-        "version": "16.0.2+20230430",
+        "url": "https://github.com/indygreg/toolchain-tools/releases/download/toolchain-bootstrap%2F20230506/llvm-16.0.3+20230506-aarch64-apple-darwin.tar.zst",
+        "size": 116375025,
+        "sha256": "f8353cbeadc4be9d83a2b0ae1dc48efe80a4700dac5bd6bdc8058b9144336479",
+        "version": "16.0.3+20230506",
     },
     "llvm-x86_64-macos": {
-        "url": "https://github.com/indygreg/toolchain-tools/releases/download/toolchain-bootstrap%2F20230430/llvm-16.0.2+20230430-x86_64-apple-darwin.tar.zst",
-        "size": 123726853,
-        "sha256": "7f8ef7f14b0188a2e3baffe155d3023b1a8e5f7fb7942fcf66f1a5b45053899c",
-        "version": "16.0.2+20230430",
+        "url": "https://github.com/indygreg/toolchain-tools/releases/download/toolchain-bootstrap%2F20230506/llvm-16.0.3+20230506-x86_64-apple-darwin.tar.zst",
+        "size": 123709633,
+        "sha256": "59b9d16f27383444ec458eb116778e871c2e23e92f6704c319f7ab5747a3e26e",
+        "version": "16.0.3+20230506",
     },
     "m4": {
         "url": "https://ftp.gnu.org/gnu/m4/m4-1.4.19.tar.xz",