fix: Escape special characters in the Postgres password by job-almekinders · Pull Request #4394 · feast-dev/feast

What this PR does / why we need it:

Update the helper function that creates the connection string to use key-value pairs. This makes sure that the special characters in the password are escaped.

Which issue(s) this PR fixes:

Fixes #4393

Misc

I updated the setup for the postgres online store to use a password with special characters to verify this keeps working in the future.