Bump to 2.9.0.0

[ohltyler]

Description

Bump to 2.9.0.0.

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
• 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]

Codecov Report

Merging #529 (f2e1b5b) into 2.x (007f8e5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              2.x     #529   +/-   ##
=======================================
  Coverage   51.98%   51.98%           
=======================================
  Files         149      149           
  Lines        5030     5030           
  Branches      983      967   -16     
=======================================
  Hits         2615     2615           
  Misses       2156     2156           
  Partials      259      259           

see 1 file with indirect coverage changes

[prudhvigodithi]

Hey @ohltyler, the idea for OSD repos is to drive the entire version from the json file.
(Related comment opensearch-project/opensearch-build#3333 (comment))
Example you can update the gh workflow like with
OSD_VERSION=$(node -p "require('./package.json').version")
@bbarani @peterzhuamazon @AMoo-Miki