Update post-merge message when Node version changes

[arelra]

What does this change?

Update the post-merge git hook message when .nvmrc changes to include examples of how to change node version with more modern node version managers.

Aligns with the post-merge hook message in DCR

Before:

Frontend now requires Node 20.12.2
. Switch to the latest version using `nvm install` or download from nodejs.org. Then run `make reinstall`.

After:

Frontend now requires Node 20.12.2
Switch to the latest version using `nvm use`, `fnm use` or `asdf install` (or whatever is appropriate) or download from nodejs.org. Then run `make reinstall`.

[github-actions]

Deploy build 1712 of dotcom:frontend-all to CODE

All deployment options

• Deploy build 1712 of dotcom:frontend-all to CODE
• Deploy parts of build 1712 to CODE by previewing it first
• What's on CODE right now?

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From guardian/actions-riff-raff.

[prout-bot]

Seen on ADMIN-PROD (merged by @arelra 12 minutes ago)

• Check your changes on www.theguardian.com ✔️
• Keep an eye on the deploy dashboard 📉

[prout-bot]

Seen on FRONTS-PROD (merged by @arelra 14 minutes and 9 seconds ago)

• Check your changes on www.theguardian.com ✔️
• Keep an eye on the deploy dashboard 📉