Mastodon connection failed because of passing "scope" instead of "scopes" in the query string

Description

Hi,

When using the connection with Mastodon, I have: The requested scope is invalid, unknown, or malformed.

But the URL is using: https://<serverURL>/oauth/authorize?client_id=<client_ID>&response_type=code&redirect_uri=https%3A%2F%2F<Postiz_Server>%2Fintegrations%2Fsocial%2Fmastodon&scope=write:statuses+profile+write:media&state=<some_state>

See scope while it should be scopes. If I manually change it to scopes, then this time I'm seeing the app authorization from the Mastodon server.

Reproduction steps

1. Connect your mastodon instance with the right ID/secret and URL
2. See the error message
3. Change scope to scopes in the URL and it works

Expected behavior

It should work with the right query string

Actual Behavior with Screenshots

By default:

After changing to scopes:

Operating system

Linux

Node Version

Using the Docker compose

Provide any additional context for the Bug.

No response

Have you spent some time to check if this bug has been raised before?

• I checked and didn't find similar issue

Are you willing to submit PR?

Yes I am willing to submit a PR!