ref: upgrade pytest-rerunfailures (#81116)

this should allow us to upgrade pytest finally

<!-- Describe your PR here. -->

Author: asottile-sentry

requirements-dev-frozen.txt

@@ -152,7 +152,7 @@ pytest-django==4.9.0
 pytest-fail-slow==0.3.0
 pytest-json-report==1.5.0
 pytest-metadata==3.1.1
-pytest-rerunfailures==14.0
+pytest-rerunfailures==15.0
 pytest-sentry==0.3.0
 pytest-xdist==3.0.2
 python-dateutil==2.9.0

requirements-dev.txt

@@ -14,7 +14,7 @@ pytest-cov>=4.0.0
 pytest-django>=4.9.0
 pytest-fail-slow>=0.3.0
 pytest-json-report>=1.5.0
-pytest-rerunfailures>=14
+pytest-rerunfailures>=15
 pytest-sentry>=0.3.0
 pytest-xdist>=3
 responses>=0.23.1