The monospaced text (commit messages and code) in new Gerrit gitiles pages appears bold.
This appears to be coming from a rule in base.css:
.u-pre { font-size: 10pt; font-weight: 500; white-space: pre; }
Unsetting font-weight in this rule results in normal-weight text.
Link to our gitiles with Gerrit's own fonts:
https://gerrit.wikimedia.org/r/plugins/gitiles/operations/software/gerrit/+/589af813ccca4c329bd4845852cd9d6d73d1d11d/gerrit-main/src/main/java/Main.java
Link to the same file in the same commit on gerrit-review with 3rd party fonts:
https://gerrit.googlesource.com/gerrit/+/589af813ccca4c329bd4845852cd9d6d73d1d11d/gerrit-main/src/main/java/Main.java