update the year in the homepage banner

Author: Kimberley Cook

app/views/dashboard/show.html.haml

@@ -1,7 +1,7 @@
 - title t('homepage.title')
 
 .alert.alert-dark.mb-0.text-center
-  We’re beyond proud to launch our <strong>2023</strong> Impact Report, which you can read here - <a href="https://impact-report.codebar.io/" class="text-dark" target="_blank"">impact-report.codebar.io</a>
+  We’re beyond proud to launch our <strong>2024</strong> Impact Report, which you can read here - <a href="https://impact-report.codebar.io/" class="text-dark" target="_blank"">impact-report.codebar.io</a>
 
 .homepage-hero.d-flex.align-items-center
   .container.d-flex