chore(plugin-chart-echarts): bump echarts 5.1.1

[villebro]

Bump ECharts from 5.1.0 to 5.1.1 to pull in the following fixes:

https://dist.apache.org/repos/dist/dev/echarts/5.1.1-rc.1/RELEASE_NOTE.txt

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[zhaoyongjie]

LGTM!

[codecov]

Codecov Report

Merging #1074 (791619d) into master (7fedff3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1074   +/-   ##
=======================================
  Coverage   27.80%   27.80%           
=======================================
  Files         453      453           
  Lines        9104     9104           
  Branches     1416     1416           
=======================================
  Hits         2531     2531           
  Misses       6381     6381           
  Partials      192      192           

Impacted Files	Coverage Δ
...lugin-chart-echarts/src/Timeseries/transformers.ts	56.57% <ø> (ø)

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