Update dependencies and workflow actions

[Nuru]

what

• Add Renovate configuration. Supersedes and closes Configure Renovate #15
• Bump webpack from 5.74 to 5.76. Supersedes and closes Bump webpack from 5.74.0 to 5.76.0 #12
• Update dependency @​actions/core to v1.10.1
• Update dependency @actions/github to v6
• Update dependency webpack-cli to v5
• Update eslint in pre-commit from v8.26.0 to v8.56.0
  • Update eslint configuration to ECMA 2021 and es6: true
• Update deploy.yml workflow actions to current

why

• Get automatic update
• Security patch
• Stay current, move to NodeJS v20