Add changelog entry for new cli flag
Add changelog entry for new cli flag

MichaelAquilina/pytest,tomviner/pytest,The-Compiler/pytest,hpk42/pytest,tgoodlet/pytest,vmalloc/dessert,malinoff/pytest,RonnyPfannschmidt/pytest,nicoddemus/pytest,pytest-dev/pytest,skylarjhdownes/pytest,The-Compiler/pytest,flub/pytest,ddboline/pytest,tomviner/pytest,jaraco/pytest,alfredodeza/pytest,tareqalayan/pytest,txomon/pytest,etataurov/pytest,davidszotten/pytest,hackebrot/pytest,rmfitzpatrick/pytest,markshao/pytest,hpk42/pytest,nicoddemus/pytest,Akasurde/pytest,pfctdayelise/pytest,eli-b/pytest