release: 164.0.0

[FrederikBolding]

Release candidate for 164.0.0. Including support for Blob in Snaps.

---

Note

Low Risk
Version and changelog-only release; sandbox surface grows slightly via the Blob endowment already merged in prior PRs.

Overview
Release cut for 164.0.0 that bumps the monorepo version and publishes @metamask/snaps-utils@12.4.0 and @metamask/snaps-execution-environments@11.2.0.

The highlighted user-facing change in these package notes is Blob as a default Snap endowment (#4063), so Snaps can use Blob without an extra permission. The execution-environments release also records a @metamask/superstruct bump to ^3.3.0 (#4062).

No application logic appears in this diff—only version fields and changelog/compare-link updates.

^{Reviewed by Cursor Bugbot for commit 1a21ee3. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.59%. Comparing base (b6cd45a) to head (1a21ee3).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4072   +/-   ##
=======================================
  Coverage   98.59%   98.59%           
=======================================
  Files         428      428           
  Lines       12485    12485           
  Branches     1975     1975           
=======================================
  Hits        12310    12310           
  Misses        175      175           

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