Set the message-relayer package to private

[nickmzero]

Tiny pr, marking the message-relayer package as private.

• Fixes Add "private" attribute to message-relayer package.json #2312

[changeset-bot]

⚠️ No Changeset found

Latest commit: aa9a7d3

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[codecov-commenter]

Codecov Report

Merging #2313 (aa9a7d3) into develop (f50d1c4) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #2313   +/-   ##
========================================
  Coverage    80.08%   80.08%           
========================================
  Files           77       77           
  Lines         2460     2460           
  Branches       450      450           
========================================
  Hits          1970     1970           
  Misses         490      490           

Flag	Coverage Δ
contracts	99.29% <ø> (ø)
core-utils	86.77% <ø> (ø)
data-transport-layer	49.72% <ø> (ø)
sdk	55.75% <ø> (ø)

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[smartcontracts]

This is perfect, thank you! 🙏

For other reviewers: the reason this is being done can be found in #2312. I don't believe this requires a changeset since it doesn't really change anything, but we could consider cutting a major release here to distinguish it from previous versions.