chore: bump superset-ui to 0.18.1

[zhaoyongjie]

SUMMARY

Pull in the following PRs:

• feat(legacy-plugin-chart-country-map): add Vietnam map apache-superset/superset-ui#1334
• fix: bignumber format by time formatter apache-superset/superset-ui#1307
• fix(plugin-chart-echarts): [gauge chart] filter indicator not be shown apache-superset/superset-ui#1326
• fix(plugin-chart-echarts): [feature-parity] display custom metric label apache-superset/superset-ui#1337

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

Testted in local

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #16563 (4d4908a) into master (75a1b19) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #16563   +/-   ##
=======================================
  Coverage   76.50%   76.50%           
=======================================
  Files        1002     1002           
  Lines       53801    53801           
  Branches     6858     6858           
=======================================
  Hits        41158    41158           
  Misses      12406    12406           
  Partials      237      237           

Flag	Coverage Δ
javascript	71.00% <ø> (ø)

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