Get rid of everypage warnings

[jsf9k]

🐛 Summary

When I run the BOD 18-01 scanning I get warnings from xetex in this Docker container:

Package everypage Warning: Functionality similar to this package has recently
(everypage)                been implemented in LaTeX. This package is now in
(everypage)                legacy status.
(everypage)                Please, don't use it in new documents and packages.

Package everypage Warning: You appear to be running a version of LaTeX
(everypage)                providing the new functionality.
(everypage)                Doing the best to deliver the original `everypage`
(everypage)                interface on top of it. Strict equivalence is
(everypage)                not possible, breakage may occur.
(everypage)                If truly needed, Use `everypage-1x` to force the
(everypage)                loading of an older code base.

We should get rid of these warnings.

[jsf9k]

This package is now used explicitly by us. It is being pulled in by the background package. There is nothing we can do about this right now, but I will leave this issue open to remind us that these warnings persist.