Update branch reference in release notes check

[jeff-hernandez]

The branch reference was updated to check for development branches.

[codecov]

Codecov Report

Merging #1315 (d9b55f7) into main (6f7cead) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1315   +/-   ##
=======================================
  Coverage   98.38%   98.38%           
=======================================
  Files         135      135           
  Lines       14496    14496           
=======================================
  Hits        14262    14262           
  Misses        234      234           

Impacted Files	Coverage Δ
featuretools/computational_backends/utils.py	95.54% <ø> (ø)
featuretools/utils/plot_utils.py	92.00% <ø> (ø)

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