Automate version bumps

[maryamsulemani97]

We currently do this manually for the following pages:

• config.js
• learn/getting_started/quick_start.md -> Docker tab
• learn/cookbooks/docker.md (Not merged yet)

[curquiza]

I'm here for any help ✋

[guimachiavelli]

No longer relevant. At the moment we only need to bump the Meilisearch version in one spot, and automating that is probably more work than doing it manually for every new release.