change label name to ignore-for-release-notes

[schimih]

Description of the reasoning behind the pull request (what feature was missing / how the problem was manifesting itself / what was the motive behind the refactoring)

• previously named ignore-for-release label was changed to ignore-for-release-notes to remove any confusion with regards to the scope of the PR

Proposed Changes

• change the name of the label

Testing procedure

• automatically generate a release note and check if PR's are distributed to proper chapter.

[codecov-commenter]

Codecov Report

Merging #4369 (5c2a752) into master (3a29c56) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #4369      +/-   ##
==========================================
- Coverage   70.92%   70.92%   -0.01%     
==========================================
  Files         618      618              
  Lines       82508    82508              
==========================================
- Hits        58520    58518       -2     
- Misses      19762    19763       +1     
- Partials     4226     4227       +1     

Impacted Files	Coverage Δ
storage/txcache/txListBySenderMap.go	97.50% <0.00%> (-2.50%)	⬇️

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