Bump @antora/cli from 2.3.3 to 2.3.4 in /docs (#9)

Bumps [@antora/cli](https://gitlab.com/antora/antora) from 2.3.3 to 2.3.4.
- [Release notes](https://gitlab.com/antora/antora/tags)
- [Changelog](https://gitlab.com/antora/antora/blob/master/CHANGELOG.adoc)
- [Commits](https://gitlab.com/antora/antora/compare/v2.3.3...v2.3.4)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Christophe Prud'homme <christophe.prudhomme@cemosis.fr>

Author: dependabot[bot]

docs/package-lock.json

@@ -8,7 +8,7 @@
     "preview:build": "node_modules/.bin/antora site-dev.yml --stacktrace --fetch; node-srv -p 8010 build/site"
   },
   "devDependencies": {
-    "@antora/cli": "^2.3.3",
+    "@antora/cli": "^2.3.4",
     "@antora/site-generator-default": "^2.3.4",
     "@feelpp/asciidoctor-remote-include-processor": "^0.0.6",
     "node-srv": "^3.0.2"