The `jwt-aud` config was not validated when containing ':'
character according to RFC 3986. This fix validates it and
fails at startup if it is invalid.
* fix: forbid same server-port and admin-server-port
Forbids server-port and admin-server-port from being equal altogether,
despite they might not conflict at all in case admin and app are bound
to different addresses. Implemented as per the discussion at
https://github.com/PostgREST/postgrest/issues/3508#issuecomment-2125123633
Splitting the output into separate files and adding top-level newlines makes this
much better to read and understand when looking at diffs.
Inspired by #1699
Those were left out of the schema dump when the features were introduced, probably
because ByteString doesn't have a toJSON instance. Changing the type to Text solves
this easily.
Resolves#3237
