Upgrades IM Dashboard plugin to OpenSearch Dashboards 2.0

[dbbaughe]

Signed-off-by: Drew Baugher [email protected]

Description

Bumps IM Dashboards to 2.0

Main changes had to make:

• Bumped versions
• Bump nodejs version supported
• Fixed some dependency conflicts w/ OpenSearch Dashboards
• Update .github workflows to use 2.0 (main as of now) and switched java-version to 11 instead of 14
• Fixed some snapshots that changed from new Eui version
• Fixed some assertions that were failing relating to modals and the # of elements at root/document level

Check List

• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov-commenter]

Codecov Report

Merging #169 (f679f6f) into main (8155501) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #169   +/-   ##
=======================================
  Coverage   63.32%   63.32%           
=======================================
  Files         155      155           
  Lines        4447     4447           
  Branches      738      738           
=======================================
  Hits         2816     2816           
  Misses       1415     1415           
  Partials      216      216           

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