Update to Go 1.20 + run better align (#2927)

* chore(go): update go version to 1.20. Closes #2185

* chore(go): run better align against project

To optimize struct field order. Closes #2870

* chore(go): update CI jobs to use Go 1.20

* fix(go): linter warnings for Go 1.20 update

auth/indieauth/server.go

@@ -12,13 +12,13 @@ import (
 // ServerAuthRequest is n inbound request to authenticate against
 // this Owncast instance.
 type ServerAuthRequest struct {
+	Timestamp     time.Time
 	ClientID      string
 	RedirectURI   string
 	CodeChallenge string
 	State         string
 	Me            string
 	Code          string
-	Timestamp     time.Time
 }
 
 // ServerProfile represents basic user-provided data about this Owncast instance.