fix!: consolidate poxaddress return types

[janniks]

This PR was published to npm with the version 6.5.5-pr.d409ae4.0
e.g. npm install @stacks/[email protected] --save-exact

BREAKING CHANGE:
Convert version of PoXAddress from array to number.

• closes Consolidate poxAddress type #1508

Breaking change?

Yep

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Name	Status	Preview	Comments	Updated (UTC)
stacksjs-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 22, 2023 0:35am

[codecov]

Codecov Report

Merging #1511 (d409ae4) into next (f425455) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             next    #1511   +/-   ##
=======================================
  Coverage   66.17%   66.17%           
=======================================
  Files         118      118           
  Lines        8635     8635           
  Branches     1884     1884           
=======================================
  Hits         5714     5714           
  Misses       2793     2793           
  Partials      128      128           

Impacted Files	Coverage Δ
packages/stacking/src/index.ts	89.22% <ø> (ø)