website/blog: fix image so it displays in twitter post (#8656)

* fix image for Twitter

* change image so it shows in twitter postchnage

website/blog/2024-02-22-my-first-week-as-CEO-at-Authentik-Security/item.md

@@ -18,7 +18,7 @@ tags:
     - authentication
     - Authentik Security
 hide_table_of_contents: false
-image: https://goauthentik.io/img/icon_top_brand_colour.svg
+image: ./star-history-authentik.png
 ---
 
 > **_authentik is an open source Identity Provider that unifies your identity needs into a single platform, replacing Okta, Active Directory, and auth0. Authentik Security is a [public benefit company](https://github.com/OpenCoreVentures/ocv-public-benefit-company/blob/main/ocv-public-benefit-company-charter.md) building on top of the open source project._**
@@ -29,8 +29,6 @@ Hello world! I'm excited to be joining Authentik Security as CEO. I wanted to ta
 
 At the start of my very first "official" day on the job, I got an overview of the various applications we use from Jens, our founder and CTO. If you have ever been through a company onboarding process, you know that it might take a few days up to a couple weeks to get access to everything, sometimes even longer. In a small and agile startup, that might be as little as a day if you're lucky.
 
-![authentik logo](https://goauthentik.io/img/icon_top_brand_colour.svg)
-
 <!--truncate-->
 
 _While on our first call_, in the first few minutes, Jens provisioned me as a new user to our own internal authentik instance. I logged in, added MFA, and _within one minute_ I had access to all of the applications I needed to dive in. It's always good to [dogfood](https://en.wikipedia.org/wiki/Eating_your_own_dog_food) your own products, and even better when those products help you get your own work done faster! Onboarding new employees might seem like a specific edge case for an SSO, but it's a great example of how having a flexible identity platform in place can make a broad set of day-to-day chores so much easier.