Changelog check job: expect new branch prefixing from dep updates bot

[dsherry]

We changed the branch strategy of the update deps bot to fix a weird github/circleci bug. We should also update the changelog checkin job to continue to mark update deps PRs as green.

[codecov]

Codecov Report

Merging #836 into master will increase coverage by 9.32%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #836      +/-   ##
==========================================
+ Coverage   90.35%   99.67%   +9.32%     
==========================================
  Files         188      188              
  Lines        7338     7338              
==========================================
+ Hits         6630     7314     +684     
+ Misses        708       24     -684     

Impacted Files	Coverage Δ
evalml/tests/component_tests/test_components.py	100.00% <0.00%> (+0.55%)	⬆️
evalml/automl/auto_search_base.py	97.91% <0.00%> (+0.59%)	⬆️
evalml/tests/pipeline_tests/test_pipelines.py	99.74% <0.00%> (+2.25%)	⬆️
evalml/tests/component_tests/test_utils.py	96.42% <0.00%> (+3.57%)	⬆️
evalml/pipelines/pipeline_base.py	100.00% <0.00%> (+6.00%)	⬆️
evalml/tests/utils_tests/test_dependencies.py	100.00% <0.00%> (+6.25%)	⬆️
...ts/automl_tests/test_auto_classification_search.py	100.00% <0.00%> (+14.28%)	⬆️
.../tests/automl_tests/test_auto_regression_search.py	100.00% <0.00%> (+17.60%)	⬆️
evalml/tests/pipeline_tests/test_graphs.py	100.00% <0.00%> (+26.02%)	⬆️
...nents/estimators/classifiers/xgboost_classifier.py	100.00% <0.00%> (+34.28%)	⬆️
... and 15 more

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[jeremyliweishih]

nice catch!

[angela97lin]

Nice, LGTM!