Update step02-backup-setup.mdx

[sergico]

fix to .pgpass template

• using * instead of replication does not work as we receive the following errors:

connection to server at "192.168.1.20", port 5432 failed: fe_sendauth: no password supplied

What Changed?

[gvasquezvargas]

@sergico could you please take a look at @piano35-edb 's feedback, so we can get this ready and merge? 🙏

[gvasquezvargas]

@sergico since this branch is a fork, we cannot check it out to implement the changes @piano35-edb suggested. Do you mind making the corrections and tagging us to merge? Thanks!

[sergico]

@gvasquezvargas I should have missed the previous notifications from github, sorry about that. Will update the pull request, hopefully today Ciao e grazie