Rollup merge of #77787 - jyn514:consistent-versions, r=spastorino
Rollup merge of #77787 - jyn514:consistent-versions, r=spastorino

Update `changelog-seen` in config.toml.example

This got out of sync when the version was bumped last time in #77133

Long-term we may want to find an easier way to maintain this that
doesn't require bumping the version in three different places. Off the
top of my head I can't think of anything, though. It _is_ documented in src/bootstrap/README.md, although I don't know how many people read that.

r? @Mark-Simulacrum
cc @spastorino

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