Bind from LDIF data source panics when there is no userPassword and the panic is not logged

[longsleep]

The panic recover in https://github.com/libregraph/idm/blob/1bc74738d4ba3099dbd059de1c88c6a0cd94e88c/pkg/ldapserver/bind.go#L17 does not get logged.

For example when for whatever reason a user record has no userPassword field, the nesting code in server/handler/ldif/entry.go goes like

ldappassword.Validate(bindSimplePw, entry.UserPassword.Values[0])

and that panics.

Panics should be logged so it is clear why Bind commands return an Operational Error and this particular case should not panic in the first place.

[longsleep]

@rhafer i might fix this one soon-ish and then cut a new release - it has been a while.