chore(deps): update dependency toolchains_musl to v0.1.20 (#505)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| toolchains_musl | bazel_dep | patch | `0.1.19` -> `0.1.20` |

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Diff for: rust-examples/02-hello-cross/MODULE.bazel

@@ -7,7 +7,7 @@ module(
 bazel_dep(name = "rules_rust", version = "0.47.1")
 
 # Rules for cross compilation
-bazel_dep(name = "toolchains_musl", version = "0.1.19", dev_dependency = True)
+bazel_dep(name = "toolchains_musl", version = "0.1.20", dev_dependency = True)
 
 # https://github.com/bazelbuild/platforms/releases
 bazel_dep(name = "platforms", version = "0.0.10")