Update dependency rules_python to v1.5.4

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
rules_python	bazel_dep	patch	1.5.3 -> 1.5.4

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Release Notes

bazel-contrib/rules_python (rules_python)

v1.5.4

Compare Source

{#v1-5-4-fixed}

Fixed

• (toolchains) local_runtime_repo now checks if the include directory exists
  before attempting to watch it, fixing issues on macOS with system Python
  (#​3043).

{#v1-5-3}

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This change is 

[jwnimmer-tri]

@jwnimmer-tri reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: complete! all discussions resolved, platform LGTM from [jwnimmer-tri] (waiting on @renovate[bot])