Auto merge of #4373 - flip1995:filter_changelog_none, r=phansch
Auto merge of #4373 - flip1995:filter_changelog_none, r=phansch

Filter out PRs with changelog: none

cc #4372

Filtering out the `changelog: none` merge commits, to unclutter the output.

changelog: none

aidancully/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust