fix: diffrent postgres versions in main container and backup Job

[schmoaaaaah]

If the postgres version in alpine repo mismatches the one of the main container the dump fails.
can be tested with values:

firefly-db:
    image:
        repository: postgres
        tag: 16.3-alpine

possible problem: if main image is not alpine and backup destination is http the curl install fails

[JC5]

So what will that do when it goes to the new version? Postgres isn't known for its backwards compatibility.

Edit: never mind, I think i see what you try to do. Check out the linting errors please.