build: update version to v2.6.0, update changelog

[madhavilosetty-intel]

PR Checklist

• Unit Tests have been added for new changes
• API tests have been updated if applicable
• All commented code has been removed
• If you've added a dependency, you've ensured license is compatible with Apache 2.0 and clearly outlined the added dependency.

What are you changing?

Anything the reviewer should know when reviewing this PR?

If the there are associated PRs in other repositories, please link them here (i.e. open-amt-cloud-toolkit/repo#365 )

[codecov]

Codecov Report

Merging #1027 (c293796) into main (22e9a35) will decrease coverage by 0.31%.
The diff coverage is n/a.

❗ Current head c293796 differs from pull request most recent head 5d37327. Consider uploading reports for the commit 5d37327 to get more accurate results

@@            Coverage Diff             @@
##             main    #1027      +/-   ##
==========================================
- Coverage   77.73%   77.43%   -0.31%     
==========================================
  Files          41       41              
  Lines        1316     1316              
  Branches      145      145              
==========================================
- Hits         1023     1019       -4     
- Misses        267      271       +4     
  Partials       26       26              

Impacted Files	Coverage Δ
src/app/devices/sol/sol.component.ts	48.69% <0.00%> (-1.74%)	⬇️
src/app/devices/kvm/kvm.component.ts	45.38% <0.00%> (-1.54%)	⬇️

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