chore(deps): remove 4 dead remark packages — nothing invokes them (#448)

remark-cli, remark-lint-list-item-indent, remark-preset-lint-consistent and
remark-preset-lint-recommended are declared but never used.

Verified dead on four counts, not a manifest grep alone:

  npm scripts referencing remark   NONE
  .remarkrc* config files          NONE
  "remarkConfig" key in package.json  absent
  workflows referencing remark     NONE

The absence checks are positive-controlled: the same repository listing that
returns nothing for remark does return .babelrc, eslint.config.js and
webpack.config.js, so "no config" is a real absence rather than a broken
lookup.

Removing them also drops their transitive tree (unified/mdast/micromark),
which is most of the lockfile delta. That delta was controlled for npm-version
skew: regenerating the lockfile against the UNMODIFIED base with the same
npm 10.8.2 produces zero change, so the deletions are genuinely the remark
tree and not a reformat.

Lockfile regenerated with npx npm@10.8.2, never --legacy-peer-deps (that
strips every `peer: true` entry — 529 of them in a sibling repo).

Co-authored-by: Conduction Release Bot <release-bot@conduction.nl>

Author: rubenvdlinde