feat: upgrade node version to v20

[janmichek]

Description

Demo

Checklist:

• I have read and followed the Contributing Guide
• I have updated the documentation accordingly.
• upgrade node version on deployment servers

[github-actions]

Deployed to https://pr-656-aescan.stg.service.aepps.com

[janmichek]

@Liubov-crypto The whole app needs to be tested. See if there are no console errors
@michele-franchi you can upgrade your local node version

[Liubov-crypto]

1. Account info, bring me such errors in console:
   

2. Tokens page are not uploading info:
   
   https://github.com/aeternity/aescan/assets/69896204/794749a3-48a0-4a9c-9a25-3e66fc89abf9

[janmichek]

1. Account info, bring me such errors in console:
   

   2. Tokens page are not uploading info:
      
      https://github.com/aeternity/aescan/assets/69896204/794749a3-48a0-4a9c-9a25-3e66fc89abf9

Thanks for reporting. The root cause for those 2 symptoms is the same. For different deployments there is different url. I reported to Petar. Let's see...

[janmichek]

@Liubov-crypto it has been fixed by Petar. You can continue on testing

[Liubov-crypto]

In general LGTM. Previous errors from console have been fixed.

Found this one:

however no visible errors in UI.

[janmichek]

In general LGTM. Previous errors from console have been fixed.

Found this one:

however no visible errors in UI.

Thank you, this is a occasional known issue described in here #284

[michele-franchi]

Looks good