[llvm] Migrate away from legacy external runfiles (PR #203650)

[Shantanu Gontia via llvm-commits]

================
@@ -12,7 +12,8 @@ bazel_dep(name = "platforms", version = "1.1.0")
 bazel_dep(name = "protobuf", version = "35.0", repo_name = "com_google_protobuf")
 bazel_dep(name = "rules_android", version = "0.7.2")
 bazel_dep(name = "rules_cc", version = "0.2.19")
-bazel_dep(name = "rules_python", version = "2.0.2")
+# Upgrade to 2.0+ when https://github.com/bazel-contrib/rules_python/issues/3774 is fixed
+bazel_dep(name = "rules_python", version = "1.9.0")
----------------
shantanu-gontia wrote:

I'll defer this to @rupprecht
IIUC they had pushed the commit for bump to 2.0

https://github.com/llvm/llvm-project/pull/203650