Add Bluesky & Mastodon to services table

Not sure if Mastodon should be added here as it is not publicly available unlike Bluesky which is out on canary at least but there are people who have their Mastodon accounts on their profile so it's something developers can encounter

docs/resources/User.md

@@ -138,13 +138,15 @@ The connection object that the user has attached.
 | amazon-music    | Amazon Music        |
 | battlenet       | Battle.net          |
 | bungie          | Bungie.net          |
+| bluesky         | Bluesky             |
 | domain          | Domain              |
 | ebay            | eBay                |
 | epicgames       | Epic Games          |
 | facebook        | Facebook            |
 | github          | GitHub              |
 | instagram       | Instagram           |
 | leagueoflegends | League of Legends   |
+| mastodon        | Mastodon            |
 | paypal          | PayPal              |
 | playstation     | PlayStation Network |
 | reddit          | Reddit              |