upgrade iavl to v0.17.3-osmo-v4 - fix old height export

[p0mvn]

Closes: #XXX

Description

---

For contributor use:

• Targeted PR against correct branch (see CONTRIBUTING.md)
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Re-reviewed Files changed in the Github PR explorer

[codecov-commenter]

Codecov Report

Merging #1022 (149c66f) into v7.x (8ce7b0d) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             v7.x    #1022   +/-   ##
=======================================
  Coverage   20.59%   20.59%           
=======================================
  Files         193      193           
  Lines       25231    25231           
=======================================
  Hits         5197     5197           
  Misses      19082    19082           
  Partials      952      952           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 8ce7b0d...149c66f. Read the comment docs.