fix(deps): resolve the peer chain so npm ci works (#874)

npm ci failed with ERESOLVE, so every frontend job failed before running
a single check.

Majors had landed WITHOUT the peers that must move with them. These
packages are a set: bumping one alone leaves another declaring a range
the new version cannot satisfy, and npm rejects the whole tree rather
than the single package. Fixing them one at a time simply walks the
list, because each correction exposes the next conflict underneath --
which is exactly what happened here before the whole set was taken
together.

Realigned: postcss-html=^1.8.1 node-polyfill-webpack-plugin=4.0.0 stylelint-config-html=^1.1.0

Verified: the lockfile resolves from a clean tree, where it previously
exited on ERESOLVE.

Author: rubenvdlinde