chore(deps): update all non polkadot-js deps in root & docs folder

[Imod7]

Deps update in root folder

Updated the following dependencies to new minor and patch versions in ./package.json:

• confmgr which should resolve one out of the three open security alerts, the yaml one.
• lru-cache upgraded only to the latest minor release to avoid any breaking changes in Sidecar.
• prom-client
• winston

Updated the following devDependencies to new patch versions:

• @types/express-serve-static-core

Deps update in docs folder

Updated the following dependencies to new major/breaking versions in docs/package.json:

• css-loader
• style-loader
• swagger-ui
• yaml-loader

Updated the following devDependencies to new major/breaking and minor versions:

• copy-webpack-plugin
• html-webpack-plugin
• webpack
• webpack-cli
• webpack-dev-server

A lot of breaking changes in the docs deps but I checked all of them and they are compatible with the minimum node.js version that we have Sidecar and also the minimum webpack version.

Updated webpack.config

Update needed after upgrading yaml-loader since it introduced a breaking change in v7.0.0 - related PR

This PR switches the loader's output to be stringified JavaScript, and adds a new option asJSON to restore the previous JSON output.

This is necessary otherwise the docs are not rendered and they are giving an error message instead.

Credits / Thanks

• @TarikGul for highlighting the lru-cache issue related to the node version compatibility if updated to major version
• @chevdor for doing a new release for confmgr so we can update it also in Sidecar and resolve the security alert