chore(deps): bump markupsafe from 2.1.4 to 2.1.5 in /buildpacks/buildpack-python/tests/python-flask #982

Job	Run time
build.20-true	19m 12s
build.22-true	17m 1s
build.20-false	5m 25s
build.22-false	5m 9s
unit.heroku-20.buildpack-clojure	5m 22s
unit.heroku-22.buildpack-clojure	3m 43s
unit.heroku-20.buildpack-go	3m 56s
unit.heroku-22.buildpack-go	3m 46s
unit.heroku-20.buildpack-gradle	3m 40s
unit.heroku-22.buildpack-gradle	2m 44s
unit.heroku-20.buildpack-java	3m 43s
unit.heroku-22.buildpack-java	3m 51s
unit.heroku-20.buildpack-multi	4m 8s
unit.heroku-22.buildpack-multi	3m 10s
unit.heroku-20.buildpack-nodejs	3m 58s
unit.heroku-22.buildpack-nodejs	3m 2s
unit.heroku-20.buildpack-null	3m 6s
unit.heroku-22.buildpack-null	3m 10s
unit.heroku-20.buildpack-php	2m 59s
unit.heroku-22.buildpack-php	2m 42s
unit.heroku-20.buildpack-play	5m 8s
unit.heroku-22.buildpack-play	3m 35s
unit.heroku-20.buildpack-python	4m 10s
unit.heroku-22.buildpack-python	3m 20s
unit.heroku-20.buildpack-ruby	3m 36s
unit.heroku-22.buildpack-ruby	3m 41s
unit.heroku-20.buildpack-scala	6m 46s
unit.heroku-22.buildpack-scala	6m 20s
unit.heroku-20.buildpack-static	4m 9s
unit.heroku-22.buildpack-static	3m 20s
	2h 27m 52s

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